39799818 has 24 divisors (see below), whose sum is σ = 87074208. Its totient is φ = 13137192.

The previous prime is 39799769. The next prime is 39799829. The reversal of 39799818 is 81899793.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8880 + ... + 12587.

It is an arithmetic number, because the mean of its divisors is an integer number (3628092).

Almost surely, 2^39799818 is an apocalyptic number.

39799818 is an abundant number, since it is smaller than the sum of its proper divisors (47274390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39799818 is a wasteful number, since it uses less digits than its factorization.

39799818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21578 (or 21575 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 39799818 is about 6308.7096937488. The cubic root of 39799818 is about 341.4237242891.

The spelling of 39799818 in words is "thirty-nine million, seven hundred ninety-nine thousand, eight hundred eighteen".