39699886 has 12 divisors (see below), whose sum is σ = 62205912. Its totient is φ = 18966464.

The previous prime is 39699851. The next prime is 39699887. The reversal of 39699886 is 68899693.

It is a self number, because there is not a number n which added to its sum of digits gives 39699886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39699887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42270 + ... + 43198.

It is an arithmetic number, because the mean of its divisors is an integer number (5183826).

Almost surely, 2^39699886 is an apocalyptic number.

39699886 is a deficient number, since it is larger than the sum of its proper divisors (22506026).

39699886 is an frugal number, since it uses more digits than its factorization.

39699886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883 (or 954 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 58.

The square root of 39699886 is about 6300.7845543234. The cubic root of 39699886 is about 341.1377284107.

The spelling of 39699886 in words is "thirty-nine million, six hundred ninety-nine thousand, eight hundred eighty-six".