199639516 has 24 divisors (see below), whose sum is σ = 353009664. Its totient is φ = 98785200.

The previous prime is 199639501. The next prime is 199639523. The reversal of 199639516 is 615936991.

It is a self number, because there is not a number n which added to its sum of digits gives 199639516.

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, 230901 + ... + 231763.

It is an arithmetic number, because the mean of its divisors is an integer number (14708736).

Almost surely, 2^199639516 is an apocalyptic number.

It is an amenable number.

199639516 is a deficient number, since it is larger than the sum of its proper divisors (153370148).

199639516 is a wasteful number, since it uses less digits than its factorization.

199639516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1399 counting only the distinct ones).

The product of its digits is 393660, while the sum is 49.

The square root of 199639516 is about 14129.3848415280. The cubic root of 199639516 is about 584.4519824651.

The spelling of 199639516 in words is "one hundred ninety-nine million, six hundred thirty-nine thousand, five hundred sixteen".