398899698 has 32 divisors (see below), whose sum is σ = 831297600. Its totient is φ = 127450176.

The previous prime is 398899681. The next prime is 398899703. The reversal of 398899698 is 896998893.

It is a Curzon number.

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, 15940 + ... + 32432.

It is an arithmetic number, because the mean of its divisors is an integer number (25978050).

Almost surely, 2^398899698 is an apocalyptic number.

398899698 is an abundant number, since it is smaller than the sum of its proper divisors (432397902).

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

398899698 is a wasteful number, since it uses less digits than its factorization.

398899698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16666.

The product of its digits is 60466176, while the sum is 69.

The square root of 398899698 is about 19972.4735073050. The cubic root of 398899698 is about 736.1300881134.

The spelling of 398899698 in words is "three hundred ninety-eight million, eight hundred ninety-nine thousand, six hundred ninety-eight".