39404074 has 4 divisors (see below), whose sum is σ = 59106114. Its totient is φ = 19702036.

The previous prime is 39404063. The next prime is 39404087. The reversal of 39404074 is 47040493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47040493 = 229 ⋅205417.

It can be written as a sum of positive squares in only one way, i.e., 38975049 + 429025 = 6243^2 + 655^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9851017 + ... + 9851020.

Almost surely, 2^39404074 is an apocalyptic number.

39404074 is a deficient number, since it is larger than the sum of its proper divisors (19702040).

39404074 is a wasteful number, since it uses less digits than its factorization.

39404074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19702039.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 39404074 is about 6277.2664432856. The cubic root of 39404074 is about 340.2883194503.

The spelling of 39404074 in words is "thirty-nine million, four hundred four thousand, seventy-four".