7992440 has 16 divisors (see below), whose sum is σ = 17983080. Its totient is φ = 3196960.

The previous prime is 7992421. The next prime is 7992463. The reversal of 7992440 is 442997.

It is a self number, because there is not a number n which added to its sum of digits gives 7992440.

It is a congruent number.

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, 99866 + ... + 99945.

Almost surely, 2^7992440 is an apocalyptic number.

It is an amenable number.

7992440 is an abundant number, since it is smaller than the sum of its proper divisors (9990640).

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

7992440 is a wasteful number, since it uses less digits than its factorization.

7992440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199822 (or 199818 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 7992440 is about 2827.0903770485. The cubic root of 7992440 is about 199.9369801446.

The spelling of 7992440 in words is "seven million, nine hundred ninety-two thousand, four hundred forty".