809010457 has 2 divisors, whose sum is σ = 809010458. Its totient is φ = 809010456.

The previous prime is 809010437. The next prime is 809010469. The reversal of 809010457 is 754010908.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 789834816 + 19175641 = 28104^2 + 4379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-809010457 is a prime.

It is not a weakly prime, because it can be changed into another prime (809010407) 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, 404505228 + 404505229.

It is an arithmetic number, because the mean of its divisors is an integer number (404505229).

Almost surely, 2^809010457 is an apocalyptic number.

It is an amenable number.

809010457 is a deficient number, since it is larger than the sum of its proper divisors (1).

809010457 is an equidigital number, since it uses as much as digits as its factorization.

809010457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 809010457 is about 28443.1091303324. The cubic root of 809010457 is about 931.7899995491.

The spelling of 809010457 in words is "eight hundred nine million, ten thousand, four hundred fifty-seven".