4640489 has 8 divisors (see below), whose sum is σ = 5378688. Its totient is φ = 3921120.

The previous prime is 4640479. The next prime is 4640491. The reversal of 4640489 is 9840464.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4640489 is a prime.

It is a super-4 number, since 4×4640489⁴ (a number of 28 digits) contains 4444 as substring.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 4172 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (672336).

Almost surely, 2^4640489 is an apocalyptic number.

It is an amenable number.

4640489 is a deficient number, since it is larger than the sum of its proper divisors (738199).

4640489 is an equidigital number, since it uses as much as digits as its factorization.

4640489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9415.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 4640489 is about 2154.1794261389. The cubic root of 4640489 is about 166.7968773557.

The spelling of 4640489 in words is "four million, six hundred forty thousand, four hundred eighty-nine".