7999998 has 32 divisors (see below), whose sum is σ = 17280000. Its totient is φ = 2461536.

The previous prime is 7999993. The next prime is 8000009. The reversal of 7999998 is 8999997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999993) 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, 3003 + ... + 5001.

It is an arithmetic number, because the mean of its divisors is an integer number (540000).

Almost surely, 2^7999998 is an apocalyptic number.

7999998 is an abundant number, since it is smaller than the sum of its proper divisors (9280002).

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

7999998 is a wasteful number, since it uses less digits than its factorization.

7999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056.

The product of its digits is 3306744, while the sum is 60.

The square root of 7999998 is about 2828.4267711928. The cubic root of 7999998 is about 199.9999833333. Note that the first 4 decimals are identical.

Subtracting 7999998 from its reverse (8999997), we obtain a palindrome (999999).

The spelling of 7999998 in words is "seven million, nine hundred ninety-nine thousand, nine hundred ninety-eight".