79403478 has 32 divisors (see below), whose sum is σ = 197994240. Its totient is φ = 20624160.

The previous prime is 79403461. The next prime is 79403483. The reversal of 79403478 is 87430497.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85473 + ... + 86396.

It is an arithmetic number, because the mean of its divisors is an integer number (6187320).

Almost surely, 2^79403478 is an apocalyptic number.

79403478 is an abundant number, since it is smaller than the sum of its proper divisors (118590762).

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

79403478 is a wasteful number, since it uses less digits than its factorization.

79403478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171892.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 79403478 is about 8910.8629211766. The cubic root of 79403478 is about 429.8132919366.

The spelling of 79403478 in words is "seventy-nine million, four hundred three thousand, four hundred seventy-eight".