998816972 has 12 divisors (see below), whose sum is σ = 1774018680. Its totient is φ = 491954496.

The previous prime is 998816971. The next prime is 998816981. The reversal of 998816972 is 279618899.

It is not an unprimeable number, because it can be changed into a prime (998816971) 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, 1863197 + ... + 1863732.

It is an arithmetic number, because the mean of its divisors is an integer number (147834890).

Almost surely, 2^998816972 is an apocalyptic number.

It is an amenable number.

998816972 is a deficient number, since it is larger than the sum of its proper divisors (775201708).

998816972 is a wasteful number, since it uses less digits than its factorization.

998816972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727000 (or 3726998 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 59.

The square root of 998816972 is about 31604.0657511023. The cubic root of 998816972 is about 999.6055017249.

The spelling of 998816972 in words is "nine hundred ninety-eight million, eight hundred sixteen thousand, nine hundred seventy-two".