199494313 has 2 divisors, whose sum is σ = 199494314. Its totient is φ = 199494312.

The previous prime is 199494311. The next prime is 199494353. The reversal of 199494313 is 313494991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160706329 + 38787984 = 12677^2 + 6228^2 .

It is a cyclic number.

It is not a de Polignac number, because 199494313 - 2¹ = 199494311 is a prime.

Together with 199494311, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 199494313.

It is not a weakly prime, because it can be changed into another prime (199494311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99747156 + 99747157.

It is an arithmetic number, because the mean of its divisors is an integer number (99747157).

Almost surely, 2^199494313 is an apocalyptic number.

It is an amenable number.

199494313 is a deficient number, since it is larger than the sum of its proper divisors (1).

199494313 is an equidigital number, since it uses as much as digits as its factorization.

199494313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 199494313 is about 14124.2455727731. The cubic root of 199494313 is about 584.3102524010.

The spelling of 199494313 in words is "one hundred ninety-nine million, four hundred ninety-four thousand, three hundred thirteen".