199458868 has 24 divisors (see below), whose sum is σ = 412675200. Its totient is φ = 82534368.

The previous prime is 199458797. The next prime is 199458887. The reversal of 199458868 is 868854991.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122008 + ... + 123631.

It is an arithmetic number, because the mean of its divisors is an integer number (17194800).

Almost surely, 2^199458868 is an apocalyptic number.

It is an amenable number.

199458868 is an abundant number, since it is smaller than the sum of its proper divisors (213216332).

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

199458868 is a wasteful number, since it uses less digits than its factorization.

199458868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245679 (or 245677 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 58.

The square root of 199458868 is about 14122.9907597506. The cubic root of 199458868 is about 584.2756447251.

The spelling of 199458868 in words is "one hundred ninety-nine million, four hundred fifty-eight thousand, eight hundred sixty-eight".