39938823 has 12 divisors (see below), whose sum is σ = 57760248. Its totient is φ = 26593200.

The previous prime is 39938807. The next prime is 39938827. The reversal of 39938823 is 32883993.

It is not a de Polignac number, because 39938823 - 2⁴ = 39938807 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39938827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6748 + ... + 11198.

It is an arithmetic number, because the mean of its divisors is an integer number (4813354).

Almost surely, 2^39938823 is an apocalyptic number.

39938823 is a deficient number, since it is larger than the sum of its proper divisors (17821425).

39938823 is a wasteful number, since it uses less digits than its factorization.

39938823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454 (or 5451 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 39938823 is about 6319.7170031577. The cubic root of 39938823 is about 341.8207483762.

The spelling of 39938823 in words is "thirty-nine million, nine hundred thirty-eight thousand, eight hundred twenty-three".