8398690 has 16 divisors (see below), whose sum is σ = 15639480. Its totient is φ = 3243520.

The previous prime is 8398679. The next prime is 8398721. The reversal of 8398690 is 968938.

It can be written as a sum of positive squares in 4 ways, for example, as 8139609 + 259081 = 2853^2 + 509^2 .

It is a super-2 number, since 2×8398690² = 141075987432200, which contains 22 as substring.

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, 14191 + ... + 14770.

Almost surely, 2^8398690 is an apocalyptic number.

8398690 is a deficient number, since it is larger than the sum of its proper divisors (7240790).

8398690 is a wasteful number, since it uses less digits than its factorization.

8398690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28997.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 8398690 is about 2898.0493439553. The cubic root of 8398690 is about 203.2687035181.

The spelling of 8398690 in words is "eight million, three hundred ninety-eight thousand, six hundred ninety".