8213998 has 16 divisors (see below), whose sum is σ = 13317696. Its totient is φ = 3777120.

The previous prime is 8213987. The next prime is 8214007. The reversal of 8213998 is 8993128.

It is a self number, because there is not a number n which added to its sum of digits gives 8213998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10840 + ... + 11572.

It is an arithmetic number, because the mean of its divisors is an integer number (832356).

Almost surely, 2^8213998 is an apocalyptic number.

8213998 is a deficient number, since it is larger than the sum of its proper divisors (5103698).

8213998 is a wasteful number, since it uses less digits than its factorization.

8213998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its digits is 31104, while the sum is 40.

The square root of 8213998 is about 2866.0073272760. The cubic root of 8213998 is about 201.7676477476.

The spelling of 8213998 in words is "eight million, two hundred thirteen thousand, nine hundred ninety-eight".