74408979 has 16 divisors (see below), whose sum is σ = 105484032. Its totient is φ = 46551648.

The previous prime is 74408969. The next prime is 74408981. The reversal of 74408979 is 97980447.

It is a happy number.

It is not a de Polignac number, because 74408979 - 2¹³ = 74400787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74408909) 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 15 ways as a sum of consecutive naturals, for example, 6517 + ... + 13830.

It is an arithmetic number, because the mean of its divisors is an integer number (6592752).

Almost surely, 2^74408979 is an apocalyptic number.

74408979 is a deficient number, since it is larger than the sum of its proper divisors (31075053).

74408979 is a wasteful number, since it uses less digits than its factorization.

74408979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20426.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 74408979 is about 8626.0639343793. The cubic root of 74408979 is about 420.6056624637.

The spelling of 74408979 in words is "seventy-four million, four hundred eight thousand, nine hundred seventy-nine".