814090769 has 2 divisors, whose sum is σ = 814090770. Its totient is φ = 814090768.

The previous prime is 814090763. The next prime is 814090789. The reversal of 814090769 is 967090418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701985025 + 112105744 = 26495^2 + 10588^2 .

It is a cyclic number.

It is not a de Polignac number, because 814090769 - 2⁸ = 814090513 is a prime.

It is a super-2 number, since 2×814090769² = 1325487560342022722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (814090763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407045384 + 407045385.

It is an arithmetic number, because the mean of its divisors is an integer number (407045385).

Almost surely, 2^814090769 is an apocalyptic number.

It is an amenable number.

814090769 is a deficient number, since it is larger than the sum of its proper divisors (1).

814090769 is an equidigital number, since it uses as much as digits as its factorization.

814090769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 814090769 is about 28532.2759169331. The cubic root of 814090769 is about 933.7363730257.

The spelling of 814090769 in words is "eight hundred fourteen million, ninety thousand, seven hundred sixty-nine".