864789967 has 2 divisors, whose sum is σ = 864789968. Its totient is φ = 864789966.

The previous prime is 864789931. The next prime is 864789973. The reversal of 864789967 is 769987468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864789967 - 2⁷ = 864789839 is a prime.

It is a super-2 number, since 2×864789967² = 1495723374047722178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 864789899 and 864789908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864789907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432394983 + 432394984.

It is an arithmetic number, because the mean of its divisors is an integer number (432394984).

Almost surely, 2^864789967 is an apocalyptic number.

864789967 is a deficient number, since it is larger than the sum of its proper divisors (1).

864789967 is an equidigital number, since it uses as much as digits as its factorization.

864789967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36578304, while the sum is 64.

The square root of 864789967 is about 29407.3114548066. The cubic root of 864789967 is about 952.7308192502.

The spelling of 864789967 in words is "eight hundred sixty-four million, seven hundred eighty-nine thousand, nine hundred sixty-seven".