198942398 has 24 divisors (see below), whose sum is σ = 318098664. Its totient is φ = 93296000.

The previous prime is 198942397. The next prime is 198942413. The reversal of 198942398 is 893249891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198942397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283448 + ... + 284148.

It is an arithmetic number, because the mean of its divisors is an integer number (13254111).

Almost surely, 2^198942398 is an apocalyptic number.

198942398 is a deficient number, since it is larger than the sum of its proper divisors (119156266).

198942398 is a wasteful number, since it uses less digits than its factorization.

198942398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1211 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 53.

The square root of 198942398 is about 14104.6941831434. The cubic root of 198942398 is about 583.7709096286.

The spelling of 198942398 in words is "one hundred ninety-eight million, nine hundred forty-two thousand, three hundred ninety-eight".