813199 has 2 divisors, whose sum is σ = 813200. Its totient is φ = 813198.

The previous prime is 813167. The next prime is 813203. The reversal of 813199 is 991318.

813199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 813199 - 2⁵ = 813167 is a prime.

It is a super-2 number, since 2×813199² = 1322585227202, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 813199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406599 + 406600.

It is an arithmetic number, because the mean of its divisors is an integer number (406600).

2⁸¹³¹⁹⁹ is an apocalyptic number.

813199 is a deficient number, since it is larger than the sum of its proper divisors (1).

813199 is an equidigital number, since it uses as much as digits as its factorization.

813199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 813199 is about 901.7754709461. The cubic root of 813199 is about 93.3395304842.

The spelling of 813199 in words is "eight hundred thirteen thousand, one hundred ninety-nine".