199617994 has 8 divisors (see below), whose sum is σ = 299583648. Its totient is φ = 99756780.

The previous prime is 199617983. The next prime is 199618007. The reversal of 199617994 is 499716991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21142 + ... + 29089.

It is an arithmetic number, because the mean of its divisors is an integer number (37447956).

Almost surely, 2^199617994 is an apocalyptic number.

199617994 is a deficient number, since it is larger than the sum of its proper divisors (99965654).

199617994 is a wasteful number, since it uses less digits than its factorization.

199617994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52220.

The product of its digits is 1102248, while the sum is 55.

The square root of 199617994 is about 14128.6232167186. The cubic root of 199617994 is about 584.4309795630.

The spelling of 199617994 in words is "one hundred ninety-nine million, six hundred seventeen thousand, nine hundred ninety-four".