39693944 has 32 divisors (see below), whose sum is σ = 76507200. Its totient is φ = 19297920.

The previous prime is 39693943. The next prime is 39693947. The reversal of 39693944 is 44939693.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39693943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85874 + ... + 86334.

It is an arithmetic number, because the mean of its divisors is an integer number (2390850).

Almost surely, 2^39693944 is an apocalyptic number.

It is an amenable number.

39693944 is a deficient number, since it is larger than the sum of its proper divisors (36813256).

39693944 is a wasteful number, since it uses less digits than its factorization.

39693944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 739 counting only the distinct ones).

The product of its digits is 629856, while the sum is 47.

The square root of 39693944 is about 6300.3130080973. The cubic root of 39693944 is about 341.1207078621.

The spelling of 39693944 in words is "thirty-nine million, six hundred ninety-three thousand, nine hundred forty-four".