39993244 has 12 divisors (see below), whose sum is σ = 70056504. Its totient is φ = 19977104.

The previous prime is 39993241. The next prime is 39993253. The reversal of 39993244 is 44239993.

It is a self number, because there is not a number n which added to its sum of digits gives 39993244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39993241) 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, 354 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (5838042).

Almost surely, 2^39993244 is an apocalyptic number.

It is an amenable number.

39993244 is a deficient number, since it is larger than the sum of its proper divisors (30063260).

39993244 is a wasteful number, since it uses less digits than its factorization.

39993244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9764 (or 9762 counting only the distinct ones).

The product of its digits is 209952, while the sum is 43.

The square root of 39993244 is about 6324.0211890853. The cubic root of 39993244 is about 341.9759339221.

The spelling of 39993244 in words is "thirty-nine million, nine hundred ninety-three thousand, two hundred forty-four".