79290438 has 16 divisors (see below), whose sum is σ = 161573616. Its totient is φ = 25931360.

The previous prime is 79290427. The next prime is 79290473. The reversal of 79290438 is 83409297.

It is a self number, because there is not a number n which added to its sum of digits gives 79290438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124353 + ... + 124988.

It is an arithmetic number, because the mean of its divisors is an integer number (10098351).

Almost surely, 2^79290438 is an apocalyptic number.

79290438 is an abundant number, since it is smaller than the sum of its proper divisors (82283178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79290438 is a wasteful number, since it uses less digits than its factorization.

79290438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249399.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 79290438 is about 8904.5178420844. The cubic root of 79290438 is about 429.6092321567.

The spelling of 79290438 in words is "seventy-nine million, two hundred ninety thousand, four hundred thirty-eight".