998393236 has 12 divisors (see below), whose sum is σ = 1753833312. Its totient is φ = 497298008.

The previous prime is 998393191. The next prime is 998393243. The reversal of 998393236 is 632393899.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473470 + ... + 475573.

It is an arithmetic number, because the mean of its divisors is an integer number (146152776).

Almost surely, 2^998393236 is an apocalyptic number.

998393236 is the 16890-th centered heptagonal number.

It is an amenable number.

998393236 is a deficient number, since it is larger than the sum of its proper divisors (755440076).

998393236 is a wasteful number, since it uses less digits than its factorization.

998393236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949310 (or 949308 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 52.

The square root of 998393236 is about 31597.3612189373. The cubic root of 998393236 is about 999.4641248892.

The spelling of 998393236 in words is "nine hundred ninety-eight million, three hundred ninety-three thousand, two hundred thirty-six".