198399294 has 24 divisors (see below), whose sum is σ = 445787160. Its totient is φ = 66132936.

The previous prime is 198399277. The next prime is 198399317. The reversal of 198399294 is 492993891.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 198399294.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203629 + ... + 204600.

It is an arithmetic number, because the mean of its divisors is an integer number (18574465).

Almost surely, 2^198399294 is an apocalyptic number.

198399294 is an abundant number, since it is smaller than the sum of its proper divisors (247387866).

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

198399294 is an equidigital number, since it uses as much as digits as its factorization.

198399294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408246 (or 408234 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 198399294 is about 14085.4284279890. The cubic root of 198399294 is about 583.2392025164.

The spelling of 198399294 in words is "one hundred ninety-eight million, three hundred ninety-nine thousand, two hundred ninety-four".