8398632906 has 20 divisors (see below), whose sum is σ = 18819159282. Its totient is φ = 2799544248.

The previous prime is 8398632901. The next prime is 8398632917. The reversal of 8398632906 is 6092368938.

It can be written as a sum of positive squares in only one way, i.e., 4871342025 + 3527290881 = 69795^2 + 59391^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8398632901) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25921545 + ... + 25921868.

Almost surely, 2^8398632906 is an apocalyptic number.

8398632906 is an abundant number, since it is smaller than the sum of its proper divisors (10420526376).

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

8398632906 is a wasteful number, since it uses less digits than its factorization.

8398632906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51843427 (or 51843418 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The square root of 8398632906 is about 91644.0554864308. The cubic root of 8398632906 is about 2032.6824291259.

The spelling of 8398632906 in words is "eight billion, three hundred ninety-eight million, six hundred thirty-two thousand, nine hundred six".