864808423 has 2 divisors, whose sum is σ = 864808424. Its totient is φ = 864808422.

The previous prime is 864808397. The next prime is 864808433. The reversal of 864808423 is 324808468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864808423 - 2²⁵ = 831253991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864808423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864808433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432404211 + 432404212.

It is an arithmetic number, because the mean of its divisors is an integer number (432404212).

Almost surely, 2^864808423 is an apocalyptic number.

864808423 is a deficient number, since it is larger than the sum of its proper divisors (1).

864808423 is an equidigital number, since it uses as much as digits as its factorization.

864808423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 43.

The square root of 864808423 is about 29407.6252526449. The cubic root of 864808423 is about 952.7375968015.

The spelling of 864808423 in words is "eight hundred sixty-four million, eight hundred eight thousand, four hundred twenty-three".