814317239 has 2 divisors, whose sum is σ = 814317240. Its totient is φ = 814317238.

The previous prime is 814317197. The next prime is 814317293. The reversal of 814317239 is 932713418.

Together with next prime (814317293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 814317239 - 2²⁸ = 545881783 is a prime.

It is a super-2 number, since 2×814317239² = 1326225131465166242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814317299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407158619 + 407158620.

It is an arithmetic number, because the mean of its divisors is an integer number (407158620).

Almost surely, 2^814317239 is an apocalyptic number.

814317239 is a deficient number, since it is larger than the sum of its proper divisors (1).

814317239 is an equidigital number, since it uses as much as digits as its factorization.

814317239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 814317239 is about 28536.2443043930. The cubic root of 814317239 is about 933.8229496413.

The spelling of 814317239 in words is "eight hundred fourteen million, three hundred seventeen thousand, two hundred thirty-nine".