4640459 has 4 divisors (see below), whose sum is σ = 4685616. Its totient is φ = 4595304.

The previous prime is 4640443. The next prime is 4640477. The reversal of 4640459 is 9540464.

It is a happy number.

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 4640459 - 2⁴ = 4640443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22424 + ... + 22629.

It is an arithmetic number, because the mean of its divisors is an integer number (1171404).

Almost surely, 2^4640459 is an apocalyptic number.

4640459 is a deficient number, since it is larger than the sum of its proper divisors (45157).

4640459 is a wasteful number, since it uses less digits than its factorization.

4640459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45156.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 4640459 is about 2154.1724629193. The cubic root of 4640459 is about 166.7965179168.

The spelling of 4640459 in words is "four million, six hundred forty thousand, four hundred fifty-nine".