4493639 has 4 divisors (see below), whose sum is σ = 4508400. Its totient is φ = 4478880.

The previous prime is 4493597. The next prime is 4493647. The reversal of 4493639 is 9363944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4493639 - 2⁸ = 4493383 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 (4493659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6914 + ... + 7535.

It is an arithmetic number, because the mean of its divisors is an integer number (1127100).

Almost surely, 2^4493639 is an apocalyptic number.

4493639 is a deficient number, since it is larger than the sum of its proper divisors (14761).

4493639 is a wasteful number, since it uses less digits than its factorization.

4493639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14760.

The product of its digits is 69984, while the sum is 38.

The square root of 4493639 is about 2119.8205112698. The cubic root of 4493639 is about 165.0185348019.

The spelling of 4493639 in words is "four million, four hundred ninety-three thousand, six hundred thirty-nine".