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149170079 = 577258527
BaseRepresentation
bin10001110010000…
…10011110011111
3101101200121212202
420321002132133
5301141420304
622445122115
73460632122
oct1071023637
9341617782
10149170079
1177225763
1241b5933b
1324b9b226
1415b503b9
15d16881e
hex8e4279f

149170079 has 4 divisors (see below), whose sum is σ = 149429184. Its totient is φ = 148910976.

The previous prime is 149170069. The next prime is 149170117. The reversal of 149170079 is 970071941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970071941 = 1933350177.

It is a cyclic number.

It is not a de Polignac number, because 149170079 - 224 = 132392863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149170069) 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, 128687 + ... + 129840.

It is an arithmetic number, because the mean of its divisors is an integer number (37357296).

Almost surely, 2149170079 is an apocalyptic number.

149170079 is a deficient number, since it is larger than the sum of its proper divisors (259105).

149170079 is an equidigital number, since it uses as much as digits as its factorization.

149170079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259104.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 149170079 is about 12213.5203360866. The cubic root of 149170079 is about 530.3475577214.

The spelling of 149170079 in words is "one hundred forty-nine million, one hundred seventy thousand, seventy-nine".

Divisors: 1 577 258527 149170079