198099427 has 8 divisors (see below), whose sum is σ = 199557200. Its totient is φ = 196647264.

The previous prime is 198099389. The next prime is 198099449. The reversal of 198099427 is 724990891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198099427 - 2²³ = 189710819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198099497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89824 + ... + 92002.

It is an arithmetic number, because the mean of its divisors is an integer number (24944650).

Almost surely, 2^198099427 is an apocalyptic number.

198099427 is a deficient number, since it is larger than the sum of its proper divisors (1457773).

198099427 is a wasteful number, since it uses less digits than its factorization.

198099427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 198099427 is about 14074.7798206579. The cubic root of 198099427 is about 582.9452122607.

The spelling of 198099427 in words is "one hundred ninety-eight million, ninety-nine thousand, four hundred twenty-seven".