4406639 has 8 divisors (see below), whose sum is σ = 4711392. Its totient is φ = 4111360.

The previous prime is 4406627. The next prime is 4406653. The reversal of 4406639 is 9366044.

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 4406639 - 2¹² = 4402543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4406659) 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, 1394 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (588924).

Almost surely, 2^4406639 is an apocalyptic number.

4406639 is a deficient number, since it is larger than the sum of its proper divisors (304753).

4406639 is a wasteful number, since it uses less digits than its factorization.

4406639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 4406639 is about 2099.1996093750. The cubic root of 4406639 is about 163.9466289747.

The spelling of 4406639 in words is "four million, four hundred six thousand, six hundred thirty-nine".