74944979 has 4 divisors (see below), whose sum is σ = 75002784. Its totient is φ = 74887176.

The previous prime is 74944967. The next prime is 74944981. The reversal of 74944979 is 97944947.

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

It is a cyclic number.

It is not a de Polignac number, because 74944979 - 2²⁴ = 58167763 is a prime.

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 74944979.

It is not an unprimeable number, because it can be changed into a prime (74944579) 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, 26912 + ... + 29565.

It is an arithmetic number, because the mean of its divisors is an integer number (18750696).

Almost surely, 2^74944979 is an apocalyptic number.

74944979 is a deficient number, since it is larger than the sum of its proper divisors (57805).

74944979 is a wasteful number, since it uses less digits than its factorization.

74944979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57804.

The product of its digits is 2286144, while the sum is 53.

The square root of 74944979 is about 8657.0768161083. The cubic root of 74944979 is about 421.6131818477.

The spelling of 74944979 in words is "seventy-four million, nine hundred forty-four thousand, nine hundred seventy-nine".