983638398 has 16 divisors (see below), whose sum is σ = 2070817920. Its totient is φ = 310622616.

The previous prime is 983638387. The next prime is 983638423. The reversal of 983638398 is 893836389.

983638398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4314090 + ... + 4314317.

It is an arithmetic number, because the mean of its divisors is an integer number (129426120).

Almost surely, 2^983638398 is an apocalyptic number.

983638398 is an abundant number, since it is smaller than the sum of its proper divisors (1087179522).

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

983638398 is a wasteful number, since it uses less digits than its factorization.

983638398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8628431.

The product of its digits is 6718464, while the sum is 57.

The square root of 983638398 is about 31363.0100277381. The cubic root of 983638398 is about 994.5161146403.

The spelling of 983638398 in words is "nine hundred eighty-three million, six hundred thirty-eight thousand, three hundred ninety-eight".