4472309 has 4 divisors (see below), whose sum is σ = 4735404. Its totient is φ = 4209216.

The previous prime is 4472297. The next prime is 4472311. The reversal of 4472309 is 9032744.

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 1311025 + 3161284 = 1145^2 + 1778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4472309 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 (4472359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131522 + ... + 131555.

It is an arithmetic number, because the mean of its divisors is an integer number (1183851).

Almost surely, 2^4472309 is an apocalyptic number.

It is an amenable number.

4472309 is a deficient number, since it is larger than the sum of its proper divisors (263095).

4472309 is a wasteful number, since it uses less digits than its factorization.

4472309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263094.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 4472309 is about 2114.7834404496. The cubic root of 4472309 is about 164.7570222276.

The spelling of 4472309 in words is "four million, four hundred seventy-two thousand, three hundred nine".