398563488 has 36 divisors (see below), whose sum is σ = 1133415738. Its totient is φ = 132854400.

The previous prime is 398563483. The next prime is 398563489. The reversal of 398563488 is 884365893.

It is a happy number.

398563488 is a `hidden beast` number, since 39 + 8 + 563 + 48 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 224640144 + 173923344 = 14988^2 + 13188^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×398563488² = 317705707933452288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398563483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 691663 + ... + 692238.

Almost surely, 2^398563488 is an apocalyptic number.

It is an amenable number.

398563488 is an abundant number, since it is smaller than the sum of its proper divisors (734852250).

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

398563488 is a wasteful number, since it uses less digits than its factorization.

398563488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383917 (or 1383906 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 398563488 is about 19964.0548987424. The cubic root of 398563488 is about 735.9232158397.

The spelling of 398563488 in words is "three hundred ninety-eight million, five hundred sixty-three thousand, four hundred eighty-eight".