39474890944 has 56 divisors (see below), whose sum is σ = 81083414160. Its totient is φ = 19045254144.

The previous prime is 39474890933. The next prime is 39474890957. The reversal of 39474890944 is 44909847493.

It is a super-2 number, since 2×39474890944² (a number of 22 digits) contains 22 as substring.

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, 3582147 + ... + 3593149.

It is an arithmetic number, because the mean of its divisors is an integer number (1447918110).

Almost surely, 2^39474890944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39474890944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40541707080).

39474890944 is an abundant number, since it is smaller than the sum of its proper divisors (41608523216).

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

39474890944 is a wasteful number, since it uses less digits than its factorization.

39474890944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12977 (or 12967 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 39474890944 in words is "thirty-nine billion, four hundred seventy-four million, eight hundred ninety thousand, nine hundred forty-four".