4493644 has 12 divisors (see below), whose sum is σ = 8326584. Its totient is φ = 2114624.

The previous prime is 4493597. The next prime is 4493647. The reversal of 4493644 is 4463944.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁵ + 4⁵ + 9³ + 3⁵ + 6⁷ + 4⁷ + 4¹¹ .

It is not an unprimeable number, because it can be changed into a prime (4493647) 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, 32974 + ... + 33109.

It is an arithmetic number, because the mean of its divisors is an integer number (693882).

Almost surely, 2^4493644 is an apocalyptic number.

It is an amenable number.

4493644 is a deficient number, since it is larger than the sum of its proper divisors (3832940).

4493644 is a wasteful number, since it uses less digits than its factorization.

4493644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66104 (or 66102 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 4493644 is about 2119.8216906146. The cubic root of 4493644 is about 165.0185960063.

The spelling of 4493644 in words is "four million, four hundred ninety-three thousand, six hundred forty-four".