464639 has 4 divisors (see below), whose sum is σ = 531024. Its totient is φ = 398256.

The previous prime is 464621. The next prime is 464647. The reversal of 464639 is 936464.

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

It is a cyclic number.

It is not a de Polignac number, because 464639 - 2⁸ = 464383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464699) 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, 33182 + ... + 33195.

It is an arithmetic number, because the mean of its divisors is an integer number (132756).

2⁴⁶⁴⁶³⁹ is an apocalyptic number.

464639 is a deficient number, since it is larger than the sum of its proper divisors (66385).

464639 is an equidigital number, since it uses as much as digits as its factorization.

464639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66384.

The product of its digits is 15552, while the sum is 32.

The square root of 464639 is about 681.6443354125. The cubic root of 464639 is about 77.4530551629.

The spelling of 464639 in words is "four hundred sixty-four thousand, six hundred thirty-nine".