39959924 has 12 divisors (see below), whose sum is σ = 72970464. Its totient is φ = 19111224.

The previous prime is 39959923. The next prime is 39959971. The reversal of 39959924 is 42995993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39959923) 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, 217082 + ... + 217265.

It is an arithmetic number, because the mean of its divisors is an integer number (6080872).

Almost surely, 2^39959924 is an apocalyptic number.

It is an amenable number.

39959924 is a deficient number, since it is larger than the sum of its proper divisors (33010540).

39959924 is a wasteful number, since it uses less digits than its factorization.

39959924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434374 (or 434372 counting only the distinct ones).

The product of its digits is 787320, while the sum is 50.

The square root of 39959924 is about 6321.3862403748. The cubic root of 39959924 is about 341.8809361767.

The spelling of 39959924 in words is "thirty-nine million, nine hundred fifty-nine thousand, nine hundred twenty-four".