813269 has 2 divisors, whose sum is σ = 813270. Its totient is φ = 813268.

The previous prime is 813251. The next prime is 813277. The reversal of 813269 is 962318.

813269 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 can be written as a sum of positive squares in only one way, i.e., 743044 + 70225 = 862^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 813269 - 2⁸ = 813013 is a prime.

It is a super-2 number, since 2×813269² = 1322812932722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 813269.

It is not a weakly prime, because it can be changed into another prime (813209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406634 + 406635.

It is an arithmetic number, because the mean of its divisors is an integer number (406635).

2⁸¹³²⁶⁹ is an apocalyptic number.

It is an amenable number.

813269 is a deficient number, since it is larger than the sum of its proper divisors (1).

813269 is an equidigital number, since it uses as much as digits as its factorization.

813269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 813269 is about 901.8142824329. The cubic root of 813269 is about 93.3422086231.

The spelling of 813269 in words is "eight hundred thirteen thousand, two hundred sixty-nine".