39319972 has 24 divisors (see below), whose sum is σ = 72124416. Its totient is φ = 18720768.

The previous prime is 39319967. The next prime is 39319979. The reversal of 39319972 is 27991393.

It is not an unprimeable number, because it can be changed into a prime (39319979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22813 + ... + 24475.

It is an arithmetic number, because the mean of its divisors is an integer number (3005184).

Almost surely, 2^39319972 is an apocalyptic number.

It is an amenable number.

39319972 is a deficient number, since it is larger than the sum of its proper divisors (32804444).

39319972 is a wasteful number, since it uses less digits than its factorization.

39319972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947 (or 1945 counting only the distinct ones).

The product of its digits is 91854, while the sum is 43.

The square root of 39319972 is about 6270.5639299827. The cubic root of 39319972 is about 340.0460491262.

The spelling of 39319972 in words is "thirty-nine million, three hundred nineteen thousand, nine hundred seventy-two".