199913366 has 4 divisors (see below), whose sum is σ = 299870052. Its totient is φ = 99956682.

The previous prime is 199913359. The next prime is 199913369. The reversal of 199913366 is 663319991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 663319991 = 17 ⋅39018823.

It is a self number, because there is not a number n which added to its sum of digits gives 199913366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199913369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49978340 + ... + 49978343.

It is an arithmetic number, because the mean of its divisors is an integer number (74967513).

Almost surely, 2^199913366 is an apocalyptic number.

199913366 is a deficient number, since it is larger than the sum of its proper divisors (99956686).

199913366 is an equidigital number, since it uses as much as digits as its factorization.

199913366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99956685.

The product of its digits is 236196, while the sum is 47.

The square root of 199913366 is about 14139.0723175179. The cubic root of 199913366 is about 584.7190956631.

The spelling of 199913366 in words is "one hundred ninety-nine million, nine hundred thirteen thousand, three hundred sixty-six".