998343904 has 48 divisors (see below), whose sum is σ = 2190661200. Its totient is φ = 445077504.

The previous prime is 998343817. The next prime is 998343949. The reversal of 998343904 is 409343899.

998343904 = T₂₅₇₉₇ + T₂₅₇₉₈ + T₂₅₇₉₉.

It is a super-2 number, since 2×998343904² = 1993381101307922432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37959 + ... + 58630.

It is an arithmetic number, because the mean of its divisors is an integer number (45638775).

Almost surely, 2^998343904 is an apocalyptic number.

998343904 is the 25799-th centered triangular number.

It is an amenable number.

998343904 is an abundant number, since it is smaller than the sum of its proper divisors (1192317296).

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

998343904 is a wasteful number, since it uses less digits than its factorization.

998343904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96635 (or 96627 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 998343904 is about 31596.5805744862. The cubic root of 998343904 is about 999.4476629800.

The spelling of 998343904 in words is "nine hundred ninety-eight million, three hundred forty-three thousand, nine hundred four".