864433 has 4 divisors (see below), whose sum is σ = 915300. Its totient is φ = 813568.

The previous prime is 864427. The next prime is 864439. The reversal of 864433 is 334468.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (864427) and next prime (864439).

It can be written as a sum of positive squares in 2 ways, for example, as 627264 + 237169 = 792^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 864433 - 2⁹ = 863921 is a prime.

It is a super-2 number, since 2×864433² = 1494488822978, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

864433 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (864439) 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, 25408 + ... + 25441.

It is an arithmetic number, because the mean of its divisors is an integer number (228825).

2⁸⁶⁴⁴³³ is an apocalyptic number.

It is an amenable number.

864433 is a deficient number, since it is larger than the sum of its proper divisors (50867).

864433 is a wasteful number, since it uses less digits than its factorization.

864433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50866.

The product of its digits is 6912, while the sum is 28.

The square root of 864433 is about 929.7488908302. The cubic root of 864433 is about 95.2599712168.

The spelling of 864433 in words is "eight hundred sixty-four thousand, four hundred thirty-three".