7900998 has 32 divisors (see below), whose sum is σ = 19011840. Its totient is φ = 2138400.

The previous prime is 7900993. The next prime is 7901041. The reversal of 7900998 is 8990097.

It is a happy number.

7900998 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7900993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4153 + ... + 5748.

It is an arithmetic number, because the mean of its divisors is an integer number (594120).

Almost surely, 2^7900998 is an apocalyptic number.

7900998 is an abundant number, since it is smaller than the sum of its proper divisors (11110842).

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

7900998 is a wasteful number, since it uses less digits than its factorization.

7900998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 7900998 is about 2810.8713951371. The cubic root of 7900998 is about 199.1715564781.

The spelling of 7900998 in words is "seven million, nine hundred thousand, nine hundred ninety-eight".