199998088 has 8 divisors (see below), whose sum is σ = 374996430. Its totient is φ = 99999040.

The previous prime is 199998083. The next prime is 199998089. The reversal of 199998088 is 880899991.

It can be written as a sum of positive squares in only one way, i.e., 125037124 + 74960964 = 11182^2 + 8658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (199998083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12499873 + ... + 12499888.

Almost surely, 2^199998088 is an apocalyptic number.

It is an amenable number.

199998088 is a deficient number, since it is larger than the sum of its proper divisors (174998342).

199998088 is a wasteful number, since it uses less digits than its factorization.

199998088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24999767 (or 24999763 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 61.

The square root of 199998088 is about 14142.0680241611. The cubic root of 199998088 is about 584.8016840627.

The spelling of 199998088 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, eighty-eight".