4509644 has 6 divisors (see below), whose sum is σ = 7891884. Its totient is φ = 2254820.

The previous prime is 4509623. The next prime is 4509647. The reversal of 4509644 is 4469054.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4509644.

It is not an unprimeable number, because it can be changed into a prime (4509647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563702 + ... + 563709.

It is an arithmetic number, because the mean of its divisors is an integer number (1315314).

Almost surely, 2^4509644 is an apocalyptic number.

It is an amenable number.

4509644 is a deficient number, since it is larger than the sum of its proper divisors (3382240).

4509644 is a wasteful number, since it uses less digits than its factorization.

4509644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127415 (or 1127413 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 4509644 is about 2123.5922395790. The cubic root of 4509644 is about 165.2142182417.

The spelling of 4509644 in words is "four million, five hundred nine thousand, six hundred forty-four".