39799866 has 16 divisors (see below), whose sum is σ = 80949600. Its totient is φ = 13041648.

The previous prime is 39799853. The next prime is 39799871. The reversal of 39799866 is 66899793.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55861 + ... + 56568.

It is an arithmetic number, because the mean of its divisors is an integer number (5059350).

Almost surely, 2^39799866 is an apocalyptic number.

39799866 is an abundant number, since it is smaller than the sum of its proper divisors (41149734).

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

39799866 is a wasteful number, since it uses less digits than its factorization.

39799866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112493.

The product of its digits is 4408992, while the sum is 57.

The square root of 39799866 is about 6308.7134980121. The cubic root of 39799866 is about 341.4238615454.

The spelling of 39799866 in words is "thirty-nine million, seven hundred ninety-nine thousand, eight hundred sixty-six".