7990842 has 16 divisors (see below), whose sum is σ = 16253280. Its totient is φ = 2618352.

The previous prime is 7990823. The next prime is 7990847. The reversal of 7990842 is 2480997.

It is a self number, because there is not a number n which added to its sum of digits gives 7990842.

It is not an unprimeable number, because it can be changed into a prime (7990847) 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, 10933 + ... + 11640.

It is an arithmetic number, because the mean of its divisors is an integer number (1015830).

Almost surely, 2^7990842 is an apocalyptic number.

7990842 is an abundant number, since it is smaller than the sum of its proper divisors (8262438).

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

7990842 is a wasteful number, since it uses less digits than its factorization.

7990842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22637.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 7990842 is about 2826.8077401903. The cubic root of 7990842 is about 199.9236541936.

The spelling of 7990842 in words is "seven million, nine hundred ninety thousand, eight hundred forty-two".