199786814 has 4 divisors (see below), whose sum is σ = 299680224. Its totient is φ = 99893406.

The previous prime is 199786793. The next prime is 199786819. The reversal of 199786814 is 418687991.

199786814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×199786814³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199786819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49946702 + ... + 49946705.

It is an arithmetic number, because the mean of its divisors is an integer number (74920056).

Almost surely, 2^199786814 is an apocalyptic number.

199786814 is a deficient number, since it is larger than the sum of its proper divisors (99893410).

199786814 is an equidigital number, since it uses as much as digits as its factorization.

199786814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99893409.

The product of its digits is 870912, while the sum is 53.

The square root of 199786814 is about 14134.5963507983. The cubic root of 199786814 is about 584.5956872217.

The spelling of 199786814 in words is "one hundred ninety-nine million, seven hundred eighty-six thousand, eight hundred fourteen".