814090789 has 2 divisors, whose sum is σ = 814090790. Its totient is φ = 814090788.

The previous prime is 814090769. The next prime is 814090843. The reversal of 814090789 is 987090418.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811965025 + 2125764 = 28495^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 814090789 - 2¹⁷ = 813959717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814090769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407045394 + 407045395.

It is an arithmetic number, because the mean of its divisors is an integer number (407045395).

Almost surely, 2^814090789 is an apocalyptic number.

It is an amenable number.

814090789 is a deficient number, since it is larger than the sum of its proper divisors (1).

814090789 is an equidigital number, since it uses as much as digits as its factorization.

814090789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 814090789 is about 28532.2762674134. The cubic root of 814090789 is about 933.7363806722.

The spelling of 814090789 in words is "eight hundred fourteen million, ninety thousand, seven hundred eighty-nine".