74979931 has 12 divisors (see below), whose sum is σ = 84418768. Its totient is φ = 66196944.

The previous prime is 74979913. The next prime is 74979937. The reversal of 74979931 is 13997947.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-74979931 is a prime.

It is a super-2 number, since 2×74979931² = 11243980105529522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74979937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1426 + ... + 12328.

Almost surely, 2^74979931 is an apocalyptic number.

74979931 is a deficient number, since it is larger than the sum of its proper divisors (9438837).

74979931 is a wasteful number, since it uses less digits than its factorization.

74979931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10962 (or 10939 counting only the distinct ones).

The product of its digits is 428652, while the sum is 49.

The square root of 74979931 is about 8659.0952760667. The cubic root of 74979931 is about 421.6787140727.

The spelling of 74979931 in words is "seventy-four million, nine hundred seventy-nine thousand, nine hundred thirty-one".