199007868 has 24 divisors (see below), whose sum is σ = 484541568. Its totient is φ = 63451696.

The previous prime is 199007849. The next prime is 199007869. The reversal of 199007868 is 868700991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199007869) 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, 360246 + ... + 360797.

It is an arithmetic number, because the mean of its divisors is an integer number (20189232).

Almost surely, 2^199007868 is an apocalyptic number.

It is an amenable number.

199007868 is an abundant number, since it is smaller than the sum of its proper divisors (285533700).

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

199007868 is a wasteful number, since it uses less digits than its factorization.

199007868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721073 (or 721071 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 199007868 is about 14107.0148507755. The cubic root of 199007868 is about 583.8349403732.

The spelling of 199007868 in words is "one hundred ninety-nine million, seven thousand, eight hundred sixty-eight".