808646431 has 2 divisors, whose sum is σ = 808646432. Its totient is φ = 808646430.

The previous prime is 808646407. The next prime is 808646437. The reversal of 808646431 is 134646808.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 808646431 - 2⁷ = 808646303 is a prime.

It is a super-2 number, since 2×808646431² = 1307818100738075522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808646437) 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, 404323215 + 404323216.

It is an arithmetic number, because the mean of its divisors is an integer number (404323216).

Almost surely, 2^808646431 is an apocalyptic number.

808646431 is a deficient number, since it is larger than the sum of its proper divisors (1).

808646431 is an equidigital number, since it uses as much as digits as its factorization.

808646431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 808646431 is about 28436.7092153786. The cubic root of 808646431 is about 931.6502211027.

The spelling of 808646431 in words is "eight hundred eight million, six hundred forty-six thousand, four hundred thirty-one".