79404290 has 64 divisors (see below), whose sum is σ = 170069760. Its totient is φ = 26127360.

The previous prime is 79404223. The next prime is 79404293. The reversal of 79404290 is 9240497.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 79404290.

It is not an unprimeable number, because it can be changed into a prime (79404293) 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 31 ways as a sum of consecutive naturals, for example, 209321 + ... + 209699.

It is an arithmetic number, because the mean of its divisors is an integer number (2657340).

Almost surely, 2^79404290 is an apocalyptic number.

79404290 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79404290 is an abundant number, since it is smaller than the sum of its proper divisors (90665470).

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

79404290 is a wasteful number, since it uses less digits than its factorization.

79404290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 79404290 is about 8910.9084834264. The cubic root of 79404290 is about 429.8147570580.

The spelling of 79404290 in words is "seventy-nine million, four hundred four thousand, two hundred ninety".