39218972 has 12 divisors (see below), whose sum is σ = 73912776. Its totient is φ = 18101040.

The previous prime is 39218969. The next prime is 39219013. The reversal of 39218972 is 27981293.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377054 + ... + 377157.

It is an arithmetic number, because the mean of its divisors is an integer number (6159398).

Almost surely, 2^39218972 is an apocalyptic number.

It is an amenable number.

39218972 is a deficient number, since it is larger than the sum of its proper divisors (34693804).

39218972 is a wasteful number, since it uses less digits than its factorization.

39218972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754228 (or 754226 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 39218972 is about 6262.5052494988. The cubic root of 39218972 is about 339.7546442079.

The spelling of 39218972 in words is "thirty-nine million, two hundred eighteen thousand, nine hundred seventy-two".