13839877321 has 8 divisors (see below), whose sum is σ = 14319019080. Its totient is φ = 13360862592.

The previous prime is 13839877319. The next prime is 13839877427. The reversal of 13839877321 is 12377893831.

It can be written as a sum of positive squares in 4 ways, for example, as 9929126025 + 3910751296 = 99645^2 + 62536^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13839877321 - 2¹ = 13839877319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13839877721) 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, 225291 + ... + 280063.

It is an arithmetic number, because the mean of its divisors is an integer number (1789877385).

Almost surely, 2^13839877321 is an apocalyptic number.

It is an amenable number.

13839877321 is a deficient number, since it is larger than the sum of its proper divisors (479141759).

13839877321 is an equidigital number, since it uses as much as digits as its factorization.

13839877321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63515.

The product of its digits is 1524096, while the sum is 52.

The spelling of 13839877321 in words is "thirteen billion, eight hundred thirty-nine million, eight hundred seventy-seven thousand, three hundred twenty-one".