851313469 has 2 divisors, whose sum is σ = 851313470. Its totient is φ = 851313468.

The previous prime is 851313431. The next prime is 851313481. The reversal of 851313469 is 964313158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510172569 + 341140900 = 22587^2 + 18470^2 .

It is a cyclic number.

It is not a de Polignac number, because 851313469 - 2⁷ = 851313341 is a prime.

It is a super-2 number, since 2×851313469² = 1449469245001627922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (851313769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425656734 + 425656735.

It is an arithmetic number, because the mean of its divisors is an integer number (425656735).

Almost surely, 2^851313469 is an apocalyptic number.

It is an amenable number.

851313469 is a deficient number, since it is larger than the sum of its proper divisors (1).

851313469 is an equidigital number, since it uses as much as digits as its factorization.

851313469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 851313469 is about 29177.2765864122. The cubic root of 851313469 is about 947.7559105742.

The spelling of 851313469 in words is "eight hundred fifty-one million, three hundred thirteen thousand, four hundred sixty-nine".