4638489 has 12 divisors (see below), whose sum is σ = 6528816. Its totient is φ = 2928888.

The previous prime is 4638461. The next prime is 4638509. The reversal of 4638489 is 9848364.

It is not a de Polignac number, because 4638489 - 2⁵ = 4638457 is a prime.

It is a Curzon number.

4638489 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4638489.

It is not an unprimeable number, because it can be changed into a prime (4638419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1059 + ... + 3224.

It is an arithmetic number, because the mean of its divisors is an integer number (544068).

Almost surely, 2^4638489 is an apocalyptic number.

It is an amenable number.

4638489 is a deficient number, since it is larger than the sum of its proper divisors (1890327).

4638489 is a wasteful number, since it uses less digits than its factorization.

4638489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324 (or 4305 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 4638489 is about 2153.7151622255. The cubic root of 4638489 is about 166.7729113691.

The spelling of 4638489 in words is "four million, six hundred thirty-eight thousand, four hundred eighty-nine".