199273198 has 4 divisors (see below), whose sum is σ = 298909800. Its totient is φ = 99636598.

The previous prime is 199273187. The next prime is 199273199. The reversal of 199273198 is 891372991.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×199273198² = 79419614882294408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199273199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49818298 + ... + 49818301.

It is an arithmetic number, because the mean of its divisors is an integer number (74727450).

Almost surely, 2^199273198 is an apocalyptic number.

199273198 is a deficient number, since it is larger than the sum of its proper divisors (99636602).

199273198 is an equidigital number, since it uses as much as digits as its factorization.

199273198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99636601.

The product of its digits is 244944, while the sum is 49.

The square root of 199273198 is about 14116.4159048960. The cubic root of 199273198 is about 584.0942938223.

The spelling of 199273198 in words is "one hundred ninety-nine million, two hundred seventy-three thousand, one hundred ninety-eight".