998637384 has 32 divisors (see below), whose sum is σ = 2497381920. Its totient is φ = 332774016.

The previous prime is 998637373. The next prime is 998637389. The reversal of 998637384 is 483736899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (998637389) 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, 123844 + ... + 131660.

It is an arithmetic number, because the mean of its divisors is an integer number (78043185).

Almost surely, 2^998637384 is an apocalyptic number.

It is an amenable number.

998637384 is an abundant number, since it is smaller than the sum of its proper divisors (1498744536).

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

998637384 is a wasteful number, since it uses less digits than its factorization.

998637384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13149 (or 13145 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The square root of 998637384 is about 31601.2244066587. The cubic root of 998637384 is about 999.5455882079.

The spelling of 998637384 in words is "nine hundred ninety-eight million, six hundred thirty-seven thousand, three hundred eighty-four".