7993900 has 18 divisors (see below), whose sum is σ = 17346980. Its totient is φ = 3197520.

The previous prime is 7993897. The next prime is 7993907. The reversal of 7993900 is 93997.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7993900.

It is not an unprimeable number, because it can be changed into a prime (7993907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39870 + ... + 40069.

Almost surely, 2^7993900 is an apocalyptic number.

It is an amenable number.

7993900 is an abundant number, since it is smaller than the sum of its proper divisors (9353080).

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

7993900 is a wasteful number, since it uses less digits than its factorization.

7993900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79953 (or 79946 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 37.

The square root of 7993900 is about 2827.3485812683. The cubic root of 7993900 is about 199.9491537411.

The spelling of 7993900 in words is "seven million, nine hundred ninety-three thousand, nine hundred".