199265988 has 24 divisors (see below), whose sum is σ = 465294592. Its totient is φ = 66373344.

The previous prime is 199265981. The next prime is 199266007. The reversal of 199265988 is 889562991.

It is a super-2 number, since 2×199265988² = 79413867947232288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199265981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13506 + ... + 24102.

Almost surely, 2^199265988 is an apocalyptic number.

It is an amenable number.

199265988 is an abundant number, since it is smaller than the sum of its proper divisors (266028604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199265988 is a wasteful number, since it uses less digits than its factorization.

199265988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171 (or 12169 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 57.

The square root of 199265988 is about 14116.1605261487. The cubic root of 199265988 is about 584.0872492712.

The spelling of 199265988 in words is "one hundred ninety-nine million, two hundred sixty-five thousand, nine hundred eighty-eight".