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8380149 = 32793383
BaseRepresentation
bin11111111101111011110101
3120202202101220
4133331323311
54121131044
6455340553
7131141631
oct37757365
916682356
108380149
114804148
122981759
13197548b
141181dc1
15b08019
hex7fdef5

8380149 has 4 divisors (see below), whose sum is σ = 11173536. Its totient is φ = 5586764.

The previous prime is 8380139. The next prime is 8380213. The reversal of 8380149 is 9410838.

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.

It is a cyclic number.

It is not a de Polignac number, because 8380149 - 211 = 8378101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8380109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396689 + ... + 1396694.

It is an arithmetic number, because the mean of its divisors is an integer number (2793384).

Almost surely, 28380149 is an apocalyptic number.

It is an amenable number.

8380149 is a deficient number, since it is larger than the sum of its proper divisors (2793387).

8380149 is a wasteful number, since it uses less digits than its factorization.

8380149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793386.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 8380149 is about 2894.8487007096. The cubic root of 8380149 is about 203.1190142299.

The spelling of 8380149 in words is "eight million, three hundred eighty thousand, one hundred forty-nine".

Divisors: 1 3 2793383 8380149