39900379900 has 36 divisors (see below), whose sum is σ = 87679839520. Its totient is φ = 15758121600.

The previous prime is 39900379889. The next prime is 39900379919. The reversal of 39900379900 is 997300993.

It is a happy number.

It is a congruent number.

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, 2517441 + ... + 2533240.

Almost surely, 2^39900379900 is an apocalyptic number.

It is an amenable number.

39900379900 is an abundant number, since it is smaller than the sum of its proper divisors (47779459620).

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

39900379900 is a wasteful number, since it uses less digits than its factorization.

39900379900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050774 (or 5050767 counting only the distinct ones).

The product of its (nonzero) digits is 413343, while the sum is 49.

The spelling of 39900379900 in words is "thirty-nine billion, nine hundred million, three hundred seventy-nine thousand, nine hundred".