998951984 has 10 divisors (see below), whose sum is σ = 1935469500. Its totient is φ = 499475984.

The previous prime is 998951983. The next prime is 998952001. The reversal of 998951984 is 489159899.

It is not an unprimeable number, because it can be changed into a prime (998951983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31217234 + ... + 31217265.

It is an arithmetic number, because the mean of its divisors is an integer number (193546950).

Almost surely, 2^998951984 is an apocalyptic number.

It is an amenable number.

998951984 is a deficient number, since it is larger than the sum of its proper divisors (936517516).

998951984 is a wasteful number, since it uses less digits than its factorization.

998951984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62434507 (or 62434501 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 62.

The square root of 998951984 is about 31606.2016699255. The cubic root of 998951984 is about 999.6505392247.

The spelling of 998951984 in words is "nine hundred ninety-eight million, nine hundred fifty-one thousand, nine hundred eighty-four".