39217980 has 48 divisors (see below), whose sum is σ = 116272800. Its totient is φ = 9842688.

The previous prime is 39217951. The next prime is 39217999. The reversal of 39217980 is 8971293.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18205 + ... + 20244.

It is an arithmetic number, because the mean of its divisors is an integer number (2422350).

Almost surely, 2^39217980 is an apocalyptic number.

39217980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39217980 is an abundant number, since it is smaller than the sum of its proper divisors (77054820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39217980 is a wasteful number, since it uses less digits than its factorization.

39217980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38478 (or 38476 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 39217980 is about 6262.4260474675. The cubic root of 39217980 is about 339.7517796126.

The spelling of 39217980 in words is "thirty-nine million, two hundred seventeen thousand, nine hundred eighty".