7998988 has 12 divisors (see below), whose sum is σ = 14070672. Its totient is φ = 3978800.

The previous prime is 7998979. The next prime is 7999051. The reversal of 7998988 is 8898997.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4288 + ... + 5863.

It is an arithmetic number, because the mean of its divisors is an integer number (1172556).

Almost surely, 2^7998988 is an apocalyptic number.

It is an amenable number.

7998988 is a deficient number, since it is larger than the sum of its proper divisors (6071684).

7998988 is a wasteful number, since it uses less digits than its factorization.

7998988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10352 (or 10350 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 58.

The square root of 7998988 is about 2828.2482210725. The cubic root of 7998988 is about 199.9915663110.

Subtracting 7998988 from its reverse (8898997), we obtain a palindrome (900009).

The spelling of 7998988 in words is "seven million, nine hundred ninety-eight thousand, nine hundred eighty-eight".