39872799 has 6 divisors (see below), whose sum is σ = 57594056. Its totient is φ = 26581860.

The previous prime is 39872797. The next prime is 39872813. The reversal of 39872799 is 99727893.

It is not a de Polignac number, because 39872799 - 2¹ = 39872797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39872797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2215147 + ... + 2215164.

Almost surely, 2^39872799 is an apocalyptic number.

39872799 is a deficient number, since it is larger than the sum of its proper divisors (17721257).

39872799 is a wasteful number, since it uses less digits than its factorization.

39872799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430317 (or 4430314 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 39872799 is about 6314.4911909037. The cubic root of 39872799 is about 341.6322866325.

It can be divided in two parts, 3987 and 2799, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 39872799 in words is "thirty-nine million, eight hundred seventy-two thousand, seven hundred ninety-nine".