864934969 has 2 divisors, whose sum is σ = 864934970. Its totient is φ = 864934968.

The previous prime is 864934951. The next prime is 864934991. The reversal of 864934969 is 969439468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 853340944 + 11594025 = 29212^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 864934969 - 2⁹ = 864934457 is a prime.

It is a super-2 number, since 2×864934969² = 1496225001198061922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (864934909) 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, 432467484 + 432467485.

It is an arithmetic number, because the mean of its divisors is an integer number (432467485).

Almost surely, 2^864934969 is an apocalyptic number.

It is an amenable number.

864934969 is a deficient number, since it is larger than the sum of its proper divisors (1).

864934969 is an equidigital number, since it uses as much as digits as its factorization.

864934969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 58.

The square root of 864934969 is about 29409.7767587583. The cubic root of 864934969 is about 952.7840653790.

It can be divided in two parts, 8649 and 34969, that multiplied together give a square (302446881 = 17391²).

The spelling of 864934969 in words is "eight hundred sixty-four million, nine hundred thirty-four thousand, nine hundred sixty-nine".