79299686404 has 27 divisors (see below), whose sum is σ = 140237444487. Its totient is φ = 39236169864.

The previous prime is 79299686381. The next prime is 79299686423. The reversal of 79299686404 is 40468699297.

It is a happy number.

The square root of 79299686404 is 281602.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 58009329 + ... + 58010695.

Almost surely, 2^79299686404 is an apocalyptic number.

79299686404 is the 281602-nd square number.

It is an amenable number.

79299686404 is a deficient number, since it is larger than the sum of its proper divisors (60937758083).

79299686404 is an equidigital number, since it uses as much as digits as its factorization.

79299686404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 64.

Multiplying 79299686404 by its sum of digits (64), we get a square (5075179929856 = 2252816²).

It can be divided in two parts, 79299 and 686404, that added together give a triangular number (765703 = T₁₂₃₇).

The spelling of 79299686404 in words is "seventy-nine billion, two hundred ninety-nine million, six hundred eighty-six thousand, four hundred four".