399822898 has 32 divisors (see below), whose sum is σ = 659579760. Its totient is φ = 181002240.

The previous prime is 399822877. The next prime is 399822911. The reversal of 399822898 is 898228993.

It can be written as a sum of positive squares in 8 ways, for example, as 86992929 + 312829969 = 9327^2 + 17687^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99798 + ... + 103726.

Almost surely, 2^399822898 is an apocalyptic number.

399822898 is a deficient number, since it is larger than the sum of its proper divisors (259756862).

399822898 is a wasteful number, since it uses less digits than its factorization.

399822898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062.

The product of its digits is 4478976, while the sum is 58.

The square root of 399822898 is about 19995.5719598115. The cubic root of 399822898 is about 736.6975421178.

It can be divided in two parts, 3998 and 22898, that added together give a square (26896 = 164²).

The spelling of 399822898 in words is "three hundred ninety-nine million, eight hundred twenty-two thousand, eight hundred ninety-eight".