79811404 has 24 divisors (see below), whose sum is σ = 141709568. Its totient is φ = 39327120.

The previous prime is 79811401. The next prime is 79811423. The reversal of 79811404 is 40411897.

It is a self number, because there is not a number n which added to its sum of digits gives 79811404.

It is not an unprimeable number, because it can be changed into a prime (79811401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126169 + ... + 126799.

Almost surely, 2^79811404 is an apocalyptic number.

It is an amenable number.

79811404 is a deficient number, since it is larger than the sum of its proper divisors (61898164).

79811404 is a wasteful number, since it uses less digits than its factorization.

79811404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 79811404 is about 8933.7228522044. The cubic root of 79811404 is about 430.5480734440.

The spelling of 79811404 in words is "seventy-nine million, eight hundred eleven thousand, four hundred four".