809668967 has 2 divisors, whose sum is σ = 809668968. Its totient is φ = 809668966.

The previous prime is 809668961. The next prime is 809668987. The reversal of 809668967 is 769866908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 809668967 - 2⁸ = 809668711 is a prime.

It is a super-2 number, since 2×809668967² = 1311127672245694178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809668961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404834483 + 404834484.

It is an arithmetic number, because the mean of its divisors is an integer number (404834484).

Almost surely, 2^809668967 is an apocalyptic number.

809668967 is a deficient number, since it is larger than the sum of its proper divisors (1).

809668967 is an equidigital number, since it uses as much as digits as its factorization.

809668967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The square root of 809668967 is about 28454.6826902006. The cubic root of 809668967 is about 932.0427472611.

The spelling of 809668967 in words is "eight hundred nine million, six hundred sixty-eight thousand, nine hundred sixty-seven".