864419287 has 2 divisors, whose sum is σ = 864419288. Its totient is φ = 864419286.

The previous prime is 864419273. The next prime is 864419317. The reversal of 864419287 is 782914468.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864419287 - 2¹⁵ = 864386519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864419287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864419267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432209643 + 432209644.

It is an arithmetic number, because the mean of its divisors is an integer number (432209644).

Almost surely, 2^864419287 is an apocalyptic number.

864419287 is a deficient number, since it is larger than the sum of its proper divisors (1).

864419287 is an equidigital number, since it uses as much as digits as its factorization.

864419287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 49.

The square root of 864419287 is about 29401.0082650238. The cubic root of 864419287 is about 952.5946749284.

The spelling of 864419287 in words is "eight hundred sixty-four million, four hundred nineteen thousand, two hundred eighty-seven".