998352985 has 32 divisors (see below), whose sum is σ = 1462118400. Its totient is φ = 639636480.

The previous prime is 998352977. The next prime is 998353001. The reversal of 998352985 is 589253899.

It is not a de Polignac number, because 998352985 - 2³ = 998352977 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, 15601 + ... + 47329.

It is an arithmetic number, because the mean of its divisors is an integer number (45691200).

Almost surely, 2^998352985 is an apocalyptic number.

It is an amenable number.

998352985 is a deficient number, since it is larger than the sum of its proper divisors (463765415).

998352985 is a wasteful number, since it uses less digits than its factorization.

998352985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31801.

The product of its digits is 6998400, while the sum is 58.

The square root of 998352985 is about 31596.7242764183. The cubic root of 998352985 is about 999.4506933174.

The spelling of 998352985 in words is "nine hundred ninety-eight million, three hundred fifty-two thousand, nine hundred eighty-five".