79400474 has 4 divisors (see below), whose sum is σ = 119100714. Its totient is φ = 39700236.

The previous prime is 79400473. The next prime is 79400501. The reversal of 79400474 is 47400497.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 70140625 + 9259849 = 8375^2 + 3043^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79400471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19850117 + ... + 19850120.

Almost surely, 2^79400474 is an apocalyptic number.

79400474 is a deficient number, since it is larger than the sum of its proper divisors (39700240).

79400474 is a wasteful number, since it uses less digits than its factorization.

79400474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39700239.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 79400474 is about 8910.6943612717. The cubic root of 79400474 is about 429.8078716224.

The spelling of 79400474 in words is "seventy-nine million, four hundred thousand, four hundred seventy-four".