39749224 has 16 divisors (see below), whose sum is σ = 75643200. Its totient is φ = 19577712.

The previous prime is 39749209. The next prime is 39749231. The reversal of 39749224 is 42294793.

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, 36544 + ... + 37615.

It is an arithmetic number, because the mean of its divisors is an integer number (4727700).

Almost surely, 2^39749224 is an apocalyptic number.

It is an amenable number.

39749224 is a deficient number, since it is larger than the sum of its proper divisors (35893976).

39749224 is a wasteful number, since it uses less digits than its factorization.

39749224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74232 (or 74228 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 39749224 is about 6304.6985653558. The cubic root of 39749224 is about 341.2789889814.

The spelling of 39749224 in words is "thirty-nine million, seven hundred forty-nine thousand, two hundred twenty-four".