398627808 has 24 divisors (see below), whose sum is σ = 1046398248. Its totient is φ = 132875904.

The previous prime is 398627807. The next prime is 398627833. The reversal of 398627808 is 808726893.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398627807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2076091 + ... + 2076282.

It is an arithmetic number, because the mean of its divisors is an integer number (43599927).

Almost surely, 2^398627808 is an apocalyptic number.

It is an amenable number.

398627808 is an abundant number, since it is smaller than the sum of its proper divisors (647770440).

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

398627808 is a wasteful number, since it uses less digits than its factorization.

398627808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152386 (or 4152378 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 398627808 is about 19965.6657289458. The cubic root of 398627808 is about 735.9628013651.

The spelling of 398627808 in words is "three hundred ninety-eight million, six hundred twenty-seven thousand, eight hundred eight".