39981164 has 12 divisors (see below), whose sum is σ = 71858304. Its totient is φ = 19450224.

The previous prime is 39981163. The next prime is 39981167. The reversal of 39981164 is 46118993.

It is not an unprimeable number, because it can be changed into a prime (39981163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134924 + ... + 135219.

It is an arithmetic number, because the mean of its divisors is an integer number (5988192).

Almost surely, 2^39981164 is an apocalyptic number.

It is an amenable number.

39981164 is a deficient number, since it is larger than the sum of its proper divisors (31877140).

39981164 is a wasteful number, since it uses less digits than its factorization.

39981164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270184 (or 270182 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 39981164 is about 6323.0660284391. The cubic root of 39981164 is about 341.9414990620.

The spelling of 39981164 in words is "thirty-nine million, nine hundred eighty-one thousand, one hundred sixty-four".