39404224 has 28 divisors (see below), whose sum is σ = 80719168. Its totient is φ = 19065600.

The previous prime is 39404207. The next prime is 39404237. The reversal of 39404224 is 42240493.

It is a junction number, because it is equal to n+sod(n) for n = 39404192 and 39404201.

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, 7947 + ... + 11914.

Almost surely, 2^39404224 is an apocalyptic number.

It is an amenable number.

39404224 is an abundant number, since it is smaller than the sum of its proper divisors (41314944).

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

39404224 is a wasteful number, since it uses less digits than its factorization.

39404224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19904 (or 19894 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 39404224 is about 6277.2783911501. The cubic root of 39404224 is about 340.2887512431.

The spelling of 39404224 in words is "thirty-nine million, four hundred four thousand, two hundred twenty-four".