198722799 has 12 divisors (see below), whose sum is σ = 313139112. Its totient is φ = 120438000.

The previous prime is 198722791. The next prime is 198722827. The reversal of 198722799 is 997227891.

It is not a de Polignac number, because 198722799 - 2³ = 198722791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198722791) 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, 1003552 + ... + 1003749.

It is an arithmetic number, because the mean of its divisors is an integer number (26094926).

Almost surely, 2^198722799 is an apocalyptic number.

198722799 is a deficient number, since it is larger than the sum of its proper divisors (114416313).

198722799 is a wasteful number, since it uses less digits than its factorization.

198722799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007318 (or 2007315 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 198722799 is about 14096.9074268082. The cubic root of 198722799 is about 583.5560355294.

The spelling of 198722799 in words is "one hundred ninety-eight million, seven hundred twenty-two thousand, seven hundred ninety-nine".