198079558 has 4 divisors (see below), whose sum is σ = 297119340. Its totient is φ = 99039778.

The previous prime is 198079549. The next prime is 198079561. The reversal of 198079558 is 855970891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 855970891 = 103 ⋅8310397.

It is a super-2 number, since 2×198079558² = 78471022594950728, 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 as a sum of consecutive naturals, namely, 49519888 + ... + 49519891.

It is an arithmetic number, because the mean of its divisors is an integer number (74279835).

Almost surely, 2^198079558 is an apocalyptic number.

198079558 is a deficient number, since it is larger than the sum of its proper divisors (99039782).

198079558 is an equidigital number, since it uses as much as digits as its factorization.

198079558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99039781.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 198079558 is about 14074.0739659844. The cubic root of 198079558 is about 582.9257221729.

The spelling of 198079558 in words is "one hundred ninety-eight million, seventy-nine thousand, five hundred fifty-eight".