4004639 has 8 divisors (see below), whose sum is σ = 4386960. Its totient is φ = 3638656.

The previous prime is 4004629. The next prime is 4004653. The reversal of 4004639 is 9364004.

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

It is a cyclic number.

It is not a de Polignac number, because 4004639 - 2¹² = 4000543 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 (4004629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3569 + ... + 4554.

It is an arithmetic number, because the mean of its divisors is an integer number (548370).

Almost surely, 2^4004639 is an apocalyptic number.

4004639 is a deficient number, since it is larger than the sum of its proper divisors (382321).

4004639 is a wasteful number, since it uses less digits than its factorization.

4004639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8169.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 4004639 is about 2001.1594139398. The cubic root of 4004639 is about 158.8014477679.

The spelling of 4004639 in words is "four million, four thousand, six hundred thirty-nine".