39921149464 has 24 divisors (see below), whose sum is σ = 87072916140. Its totient is φ = 17109063888.

The previous prime is 39921149461. The next prime is 39921149479. The reversal of 39921149464 is 46494112993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39921149461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50919442 + ... + 50920225.

Almost surely, 2^39921149464 is an apocalyptic number.

It is an amenable number.

39921149464 is an abundant number, since it is smaller than the sum of its proper divisors (47151766676).

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

39921149464 is a wasteful number, since it uses less digits than its factorization.

39921149464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101839687 (or 101839676 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 52.

The spelling of 39921149464 in words is "thirty-nine billion, nine hundred twenty-one million, one hundred forty-nine thousand, four hundred sixty-four".