39643973480 has 64 divisors (see below), whose sum is σ = 99416808000. Its totient is φ = 14139270144.

The previous prime is 39643973449. The next prime is 39643973519. The reversal of 39643973480 is 8437934693.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1521290 + ... + 1547129.

It is an arithmetic number, because the mean of its divisors is an integer number (1553387625).

Almost surely, 2^39643973480 is an apocalyptic number.

It is an amenable number.

39643973480 is an abundant number, since it is smaller than the sum of its proper divisors (59772834520).

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

39643973480 is a wasteful number, since it uses less digits than its factorization.

39643973480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068466 (or 3068462 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 56.

The spelling of 39643973480 in words is "thirty-nine billion, six hundred forty-three million, nine hundred seventy-three thousand, four hundred eighty".