813427 has 2 divisors, whose sum is σ = 813428. Its totient is φ = 813426.

The previous prime is 813419. The next prime is 813443. The reversal of 813427 is 724318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 813427 - 2³ = 813419 is a prime.

It is not a weakly prime, because it can be changed into another prime (813227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406713 + 406714.

It is an arithmetic number, because the mean of its divisors is an integer number (406714).

2⁸¹³⁴²⁷ is an apocalyptic number.

813427 is a deficient number, since it is larger than the sum of its proper divisors (1).

813427 is an equidigital number, since it uses as much as digits as its factorization.

813427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 813427 is about 901.9018793638. The cubic root of 813427 is about 93.3482530004.

It can be divided in two parts, 8 and 13427, that multiplied together give a triangular number (107416 = T₄₆₃).

The spelling of 813427 in words is "eight hundred thirteen thousand, four hundred twenty-seven".