8398131 has 8 divisors (see below), whose sum is σ = 12797184. Its totient is φ = 4798920.

The previous prime is 8398111. The next prime is 8398141. The reversal of 8398131 is 1318938.

8398131 = 768² + 769² + ... + 781².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8398131 - 2⁶ = 8398067 is a prime.

It is a super-2 number, since 2×8398131² = 141057208586322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8398092 and 8398101.

It is not an unprimeable number, because it can be changed into a prime (8398111) 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, 199935 + ... + 199976.

It is an arithmetic number, because the mean of its divisors is an integer number (1599648).

Almost surely, 2^8398131 is an apocalyptic number.

8398131 is a deficient number, since it is larger than the sum of its proper divisors (4399053).

8398131 is a wasteful number, since it uses less digits than its factorization.

8398131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399921.

The product of its digits is 5184, while the sum is 33.

The square root of 8398131 is about 2897.9528981679. The cubic root of 8398131 is about 203.2641936987.

The spelling of 8398131 in words is "eight million, three hundred ninety-eight thousand, one hundred thirty-one".