39945368 has 16 divisors (see below), whose sum is σ = 75098880. Its totient is φ = 19919008.

The previous prime is 39945349. The next prime is 39945397. The reversal of 39945368 is 86354993.

It is a congruent number.

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, 3455 + ... + 9582.

It is an arithmetic number, because the mean of its divisors is an integer number (4693680).

Almost surely, 2^39945368 is an apocalyptic number.

It is an amenable number.

39945368 is a deficient number, since it is larger than the sum of its proper divisors (35153512).

39945368 is a wasteful number, since it uses less digits than its factorization.

39945368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13426 (or 13422 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 39945368 is about 6320.2348057647. The cubic root of 39945368 is about 341.8394193871.

The spelling of 39945368 in words is "thirty-nine million, nine hundred forty-five thousand, three hundred sixty-eight".