39973884 has 12 divisors (see below), whose sum is σ = 93272424. Its totient is φ = 13324624.

The previous prime is 39973883. The next prime is 39973889. The reversal of 39973884 is 48837993.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×39973884² = 3195822804090912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39973883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1665567 + ... + 1665590.

It is an arithmetic number, because the mean of its divisors is an integer number (7772702).

Almost surely, 2^39973884 is an apocalyptic number.

It is an amenable number.

39973884 is an abundant number, since it is smaller than the sum of its proper divisors (53298540).

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

39973884 is a wasteful number, since it uses less digits than its factorization.

39973884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331164 (or 3331162 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 39973884 is about 6322.4903321397. The cubic root of 39973884 is about 341.9207435781.

The spelling of 39973884 in words is "thirty-nine million, nine hundred seventy-three thousand, eight hundred eighty-four".