39972884 has 48 divisors (see below), whose sum is σ = 84779520. Its totient is φ = 16109280.

The previous prime is 39972859. The next prime is 39972887. The reversal of 39972884 is 48827993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39972887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120599 + ... + 120929.

It is an arithmetic number, because the mean of its divisors is an integer number (1766240).

Almost surely, 2^39972884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39972884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42389760).

39972884 is an abundant number, since it is smaller than the sum of its proper divisors (44806636).

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

39972884 is a wasteful number, since it uses less digits than its factorization.

39972884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 586 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 39972884 is about 6322.4112488828. The cubic root of 39972884 is about 341.9178923532.

The spelling of 39972884 in words is "thirty-nine million, nine hundred seventy-two thousand, eight hundred eighty-four".