39985808 has 20 divisors (see below), whose sum is σ = 77578368. Its totient is φ = 19965600.

The previous prime is 39985787. The next prime is 39985837. The reversal of 39985808 is 80858993.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15833 + ... + 18183.

Almost surely, 2^39985808 is an apocalyptic number.

It is an amenable number.

39985808 is a deficient number, since it is larger than the sum of its proper divisors (37592560).

39985808 is a wasteful number, since it uses less digits than its factorization.

39985808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422 (or 3416 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 39985808 is about 6323.4332446860. The cubic root of 39985808 is about 341.9547379198.

The spelling of 39985808 in words is "thirty-nine million, nine hundred eighty-five thousand, eight hundred eight".