39916972 has 6 divisors (see below), whose sum is σ = 69854708. Its totient is φ = 19958484.

The previous prime is 39916949. The next prime is 39916973. The reversal of 39916972 is 27961993.

It is not an unprimeable number, because it can be changed into a prime (39916973) by changing a digit.

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 as a sum of consecutive naturals, namely, 4989618 + ... + 4989625.

Almost surely, 2^39916972 is an apocalyptic number.

It is an amenable number.

39916972 is a deficient number, since it is larger than the sum of its proper divisors (29937736).

39916972 is a wasteful number, since it uses less digits than its factorization.

39916972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979247 (or 9979245 counting only the distinct ones).

The product of its digits is 183708, while the sum is 46.

The square root of 39916972 is about 6317.9879708654. The cubic root of 39916972 is about 341.7583989529.

It can be divided in two parts, 399 and 16972, that added together give a palindrome (17371).

The spelling of 39916972 in words is "thirty-nine million, nine hundred sixteen thousand, nine hundred seventy-two".