2444312309 has 4 divisors (see below), whose sum is σ = 2588095404. Its totient is φ = 2300529216.

The previous prime is 2444312263. The next prime is 2444312333. The reversal of 2444312309 is 9032134442.

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 1392931684 + 1051380625 = 37322^2 + 32425^2 .

It is not a de Polignac number, because 2444312309 - 2⁸ = 2444312053 is a prime.

It is a super-2 number, since 2×2444312309² = 11949325327857822962, which contains 22 as substring.

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 (2444312809) 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, 71891522 + ... + 71891555.

It is an arithmetic number, because the mean of its divisors is an integer number (647023851).

Almost surely, 2^2444312309 is an apocalyptic number.

It is an amenable number.

2444312309 is a deficient number, since it is larger than the sum of its proper divisors (143783095).

2444312309 is a wasteful number, since it uses less digits than its factorization.

2444312309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143783094.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2444312309 is about 49439.9869437685. The cubic root of 2444312309 is about 1347.0557341164.

The spelling of 2444312309 in words is "two billion, four hundred forty-four million, three hundred twelve thousand, three hundred nine".