398762984 has 32 divisors (see below), whose sum is σ = 756815400. Its totient is φ = 196957440.

The previous prime is 398762981. The next prime is 398763041. The reversal of 398762984 is 489267893.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 252110884 + 146652100 = 15878^2 + 12110^2 .

It is not an unprimeable number, because it can be changed into a prime (398762981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485294 + ... + 486114.

Almost surely, 2^398762984 is an apocalyptic number.

It is an amenable number.

398762984 is a deficient number, since it is larger than the sum of its proper divisors (358052416).

398762984 is a wasteful number, since it uses less digits than its factorization.

398762984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1489 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 56.

The square root of 398762984 is about 19969.0506534487. The cubic root of 398762984 is about 736.0459810986.

The spelling of 398762984 in words is "three hundred ninety-eight million, seven hundred sixty-two thousand, nine hundred eighty-four".