22144307439 has 4 divisors (see below), whose sum is σ = 29525743256. Its totient is φ = 14762871624.

The previous prime is 22144307401. The next prime is 22144307443. The reversal of 22144307439 is 93470344122.

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

It is not a de Polignac number, because 22144307439 - 2²¹ = 22142210287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22144307397 and 22144307406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144307239) 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, 3690717904 + ... + 3690717909.

It is an arithmetic number, because the mean of its divisors is an integer number (7381435814).

Almost surely, 2^22144307439 is an apocalyptic number.

22144307439 is a deficient number, since it is larger than the sum of its proper divisors (7381435817).

22144307439 is an equidigital number, since it uses as much as digits as its factorization.

22144307439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381435816.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 22144307439 in words is "twenty-two billion, one hundred forty-four million, three hundred seven thousand, four hundred thirty-nine".