864437223 has 32 divisors (see below), whose sum is σ = 1254839040. Its totient is φ = 526176000.

The previous prime is 864437219. The next prime is 864437237. The reversal of 864437223 is 322734468.

It is not a de Polignac number, because 864437223 - 2² = 864437219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864437323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2280648 + ... + 2281026.

It is an arithmetic number, because the mean of its divisors is an integer number (39213720).

Almost surely, 2^864437223 is an apocalyptic number.

864437223 is a deficient number, since it is larger than the sum of its proper divisors (390401817).

864437223 is a wasteful number, since it uses less digits than its factorization.

864437223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879.

The product of its digits is 193536, while the sum is 39.

The square root of 864437223 is about 29401.3132869945. The cubic root of 864437223 is about 952.6012634054.

The spelling of 864437223 in words is "eight hundred sixty-four million, four hundred thirty-seven thousand, two hundred twenty-three".