8973992440 has 32 divisors (see below), whose sum is σ = 23075981280. Its totient is φ = 3076797312.

The previous prime is 8973992381. The next prime is 8973992441. The reversal of 8973992440 is 442993798.

It is a super-3 number, since 3×8973992440³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8973992441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16024707 + ... + 16025266.

It is an arithmetic number, because the mean of its divisors is an integer number (721124415).

Almost surely, 2^8973992440 is an apocalyptic number.

It is an amenable number.

8973992440 is an abundant number, since it is smaller than the sum of its proper divisors (14101988840).

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

8973992440 is a wasteful number, since it uses less digits than its factorization.

8973992440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32049991 (or 32049987 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The square root of 8973992440 is about 94731.1587599349. The cubic root of 8973992440 is about 2078.0782638639.

The spelling of 8973992440 in words is "eight billion, nine hundred seventy-three million, nine hundred ninety-two thousand, four hundred forty".