39952573440 has 264 divisors, whose sum is σ = 138380606208. Its totient is φ = 9833840640.

The previous prime is 39952573417. The next prime is 39952573469. The reversal of 39952573440 is 4437525993.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2588145 + ... + 2603535.

Almost surely, 2^39952573440 is an apocalyptic number.

39952573440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39952573440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69190303104).

39952573440 is an abundant number, since it is smaller than the sum of its proper divisors (98428032768).

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

39952573440 is a wasteful number, since it uses less digits than its factorization.

39952573440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15445 (or 15414 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 51.

The spelling of 39952573440 in words is "thirty-nine billion, nine hundred fifty-two million, five hundred seventy-three thousand, four hundred forty".