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717490149 = 3239163383
BaseRepresentation
bin101010110001000…
…000011111100101
31212000002021110020
4222301000133211
52432134141044
6155110145353
723531365005
oct5261003745
91760067406
10717490149
11339005a72
12180352259
13b58542ac
146b40c005
1542ec9a19
hex2ac407e5

717490149 has 4 divisors (see below), whose sum is σ = 956653536. Its totient is φ = 478326764.

The previous prime is 717490139. The next prime is 717490177. The reversal of 717490149 is 941094717.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941094717 = 3313698239.

It is a cyclic number.

It is not a de Polignac number, because 717490149 - 27 = 717490021 is a prime.

It is a super-3 number, since 3×7174901493 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 717490149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (717490139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119581689 + ... + 119581694.

It is an arithmetic number, because the mean of its divisors is an integer number (239163384).

Almost surely, 2717490149 is an apocalyptic number.

It is an amenable number.

717490149 is a deficient number, since it is larger than the sum of its proper divisors (239163387).

717490149 is a wasteful number, since it uses less digits than its factorization.

717490149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239163386.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 717490149 is about 26786.0065892622. The cubic root of 717490149 is about 895.2382869991.

The spelling of 717490149 in words is "seven hundred seventeen million, four hundred ninety thousand, one hundred forty-nine".

Divisors: 1 3 239163383 717490149