398527988 has 12 divisors (see below), whose sum is σ = 710583300. Its totient is φ = 195504192.

The previous prime is 398527981. The next prime is 398528017. The reversal of 398527988 is 889725893.

It can be written as a sum of positive squares in 2 ways, for example, as 300953104 + 97574884 = 17348^2 + 9878^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398527981) 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, 939713 + ... + 940136.

It is an arithmetic number, because the mean of its divisors is an integer number (59215275).

Almost surely, 2^398527988 is an apocalyptic number.

It is an amenable number.

398527988 is a deficient number, since it is larger than the sum of its proper divisors (312055312).

398527988 is a wasteful number, since it uses less digits than its factorization.

398527988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879906 (or 1879904 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 59.

The square root of 398527988 is about 19963.1657810078. The cubic root of 398527988 is about 735.9013656614.

The spelling of 398527988 in words is "three hundred ninety-eight million, five hundred twenty-seven thousand, nine hundred eighty-eight".