864469 has 4 divisors (see below), whose sum is σ = 871200. Its totient is φ = 857740.

The previous prime is 864449. The next prime is 864491. The reversal of 864469 is 964468.

864469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864469 - 2⁷ = 864341 is a prime.

It is a super-2 number, since 2×864469² = 1494613303922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3169 + ... + 3430.

It is an arithmetic number, because the mean of its divisors is an integer number (217800).

2⁸⁶⁴⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

864469 is a deficient number, since it is larger than the sum of its proper divisors (6731).

864469 is a wasteful number, since it uses less digits than its factorization.

864469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730.

The product of its digits is 41472, while the sum is 37.

The square root of 864469 is about 929.7682506948. The cubic root of 864469 is about 95.2612935909.

Subtracting 864469 from its reverse (964468), we obtain a palindrome (99999).

The spelling of 864469 in words is "eight hundred sixty-four thousand, four hundred sixty-nine".