4430645 has 4 divisors (see below), whose sum is σ = 5316780. Its totient is φ = 3544512.

The previous prime is 4430611. The next prime is 4430653. The reversal of 4430645 is 5460344.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1067089 + 3363556 = 1033^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 4430645 - 2¹⁴ = 4414261 is a prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443060 + ... + 443069.

It is an arithmetic number, because the mean of its divisors is an integer number (1329195).

Almost surely, 2^4430645 is an apocalyptic number.

It is an amenable number.

4430645 is a deficient number, since it is larger than the sum of its proper divisors (886135).

4430645 is an equidigital number, since it uses as much as digits as its factorization.

4430645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886134.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 4430645 is about 2104.9097367821. The cubic root of 4430645 is about 164.2438000914.

Adding to 4430645 its reverse (5460344), we get a palindrome (9890989).

The spelling of 4430645 in words is "four million, four hundred thirty thousand, six hundred forty-five".