7987973499 has 48 divisors (see below), whose sum is σ = 12791720448. Its totient is φ = 4762800000.

The previous prime is 7987973491. The next prime is 7987973509. The reversal of 7987973499 is 9943797897.

It is not a de Polignac number, because 7987973499 - 2³ = 7987973491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7987973491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4434399 + ... + 4436199.

It is an arithmetic number, because the mean of its divisors is an integer number (266494176).

Almost surely, 2^7987973499 is an apocalyptic number.

7987973499 is a deficient number, since it is larger than the sum of its proper divisors (4803746949).

7987973499 is a wasteful number, since it uses less digits than its factorization.

7987973499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520 (or 2517 counting only the distinct ones).

The product of its digits is 216040608, while the sum is 72.

The square root of 7987973499 is about 89375.4636295667. The cubic root of 7987973499 is about 1998.9972889526.

The spelling of 7987973499 in words is "seven billion, nine hundred eighty-seven million, nine hundred seventy-three thousand, four hundred ninety-nine".