998214915 has 32 divisors (see below), whose sum is σ = 1634688000. Its totient is φ = 520007040.

The previous prime is 998214907. The next prime is 998214929. The reversal of 998214915 is 519412899.

It is not a de Polignac number, because 998214915 - 2³ = 998214907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111786 + ... + 120384.

It is an arithmetic number, because the mean of its divisors is an integer number (51084000).

Almost surely, 2^998214915 is an apocalyptic number.

998214915 is the 25797-th pentagonal number.

998214915 is a deficient number, since it is larger than the sum of its proper divisors (636473085).

998214915 is a wasteful number, since it uses less digits than its factorization.

998214915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8787.

The product of its digits is 233280, while the sum is 48.

The square root of 998214915 is about 31594.5393224842. The cubic root of 998214915 is about 999.4046172564.

The spelling of 998214915 in words is "nine hundred ninety-eight million, two hundred fourteen thousand, nine hundred fifteen".