39866164 has 24 divisors (see below), whose sum is σ = 75569760. Its totient is φ = 18292704.

The previous prime is 39866159. The next prime is 39866171. The reversal of 39866164 is 46166893.

It is a super-2 number, since 2×39866164² = 3178622064149792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39866164.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7167 + ... + 11449.

It is an arithmetic number, because the mean of its divisors is an integer number (3148740).

Almost surely, 2^39866164 is an apocalyptic number.

It is an amenable number.

39866164 is a deficient number, since it is larger than the sum of its proper divisors (35703596).

39866164 is a wasteful number, since it uses less digits than its factorization.

39866164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479 (or 4477 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 39866164 is about 6313.9657902146. The cubic root of 39866164 is about 341.6133359024.

The spelling of 39866164 in words is "thirty-nine million, eight hundred sixty-six thousand, one hundred sixty-four".