4639859 has 18 divisors (see below), whose sum is σ = 5673780. Its totient is φ = 3782856.

The previous prime is 4639853. The next prime is 4639867. The reversal of 4639859 is 9589364.

It is not a de Polignac number, because 4639859 - 2²⁰ = 3591283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4639853) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25832 + ... + 26010.

It is an arithmetic number, because the mean of its divisors is an integer number (315210).

Almost surely, 2^4639859 is an apocalyptic number.

4639859 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4639859 is a deficient number, since it is larger than the sum of its proper divisors (1033921).

4639859 is a wasteful number, since it uses less digits than its factorization.

4639859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 209 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 4639859 is about 2154.0331938018. The cubic root of 4639859 is about 166.7893288130.

The spelling of 4639859 in words is "four million, six hundred thirty-nine thousand, eight hundred fifty-nine".