4442309 has 8 divisors (see below), whose sum is σ = 4601688. Its totient is φ = 4285440.

The previous prime is 4442303. The next prime is 4442311. The reversal of 4442309 is 9032444.

It can be written as a sum of positive squares in 4 ways, for example, as 178084 + 4264225 = 422^2 + 2065^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4442303) 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, 3419 + ... + 4535.

It is an arithmetic number, because the mean of its divisors is an integer number (575211).

Almost surely, 2^4442309 is an apocalyptic number.

It is an amenable number.

4442309 is a deficient number, since it is larger than the sum of its proper divisors (159379).

4442309 is a wasteful number, since it uses less digits than its factorization.

4442309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 4442309 is about 2107.6785808088. The cubic root of 4442309 is about 164.3878017759.

The spelling of 4442309 in words is "four million, four hundred forty-two thousand, three hundred nine".