74909379 has 4 divisors (see below), whose sum is σ = 99879176. Its totient is φ = 49939584.

The previous prime is 74909357. The next prime is 74909383. The reversal of 74909379 is 97390947.

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

It is not a de Polignac number, because 74909379 - 2⁵ = 74909347 is a prime.

It is a super-2 number, since 2×74909379² = 11222830124331282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74909389) 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 3 ways as a sum of consecutive naturals, for example, 12484894 + ... + 12484899.

It is an arithmetic number, because the mean of its divisors is an integer number (24969794).

Almost surely, 2^74909379 is an apocalyptic number.

74909379 is a deficient number, since it is larger than the sum of its proper divisors (24969797).

74909379 is a wasteful number, since it uses less digits than its factorization.

74909379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24969796.

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 74909379 is about 8655.0204505824. The cubic root of 74909379 is about 421.5464137258.

The spelling of 74909379 in words is "seventy-four million, nine hundred nine thousand, three hundred seventy-nine".