74744931 has 4 divisors (see below), whose sum is σ = 99659912. Its totient is φ = 49829952.

The previous prime is 74744843. The next prime is 74744939. The reversal of 74744931 is 13944747.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 74744931 - 2⁹ = 74744419 is a prime.

It is a super-2 number, since 2×74744931² = 11173609420389522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74744931.

It is not an unprimeable number, because it can be changed into a prime (74744939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12457486 + ... + 12457491.

It is an arithmetic number, because the mean of its divisors is an integer number (24914978).

Almost surely, 2^74744931 is an apocalyptic number.

74744931 is a deficient number, since it is larger than the sum of its proper divisors (24914981).

74744931 is a wasteful number, since it uses less digits than its factorization.

74744931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24914980.

The product of its digits is 84672, while the sum is 39.

The square root of 74744931 is about 8645.5150800863. The cubic root of 74744931 is about 421.2377151568.

The spelling of 74744931 in words is "seventy-four million, seven hundred forty-four thousand, nine hundred thirty-one".