39799904 has 12 divisors (see below), whose sum is σ = 78356124. Its totient is φ = 19899936.

The previous prime is 39799871. The next prime is 39799951. The reversal of 39799904 is 40999793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621842 + ... + 621905.

It is an arithmetic number, because the mean of its divisors is an integer number (6529677).

Almost surely, 2^39799904 is an apocalyptic number.

It is an amenable number.

39799904 is a deficient number, since it is larger than the sum of its proper divisors (38556220).

39799904 is a wasteful number, since it uses less digits than its factorization.

39799904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243757 (or 1243749 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 39799904 is about 6308.7165097189. The cubic root of 39799904 is about 341.4239702066.

The spelling of 39799904 in words is "thirty-nine million, seven hundred ninety-nine thousand, nine hundred four".