11844138239 has 4 divisors (see below), whose sum is σ = 11934551640. Its totient is φ = 11753724840.

The previous prime is 11844138209. The next prime is 11844138253. The reversal of 11844138239 is 93283144811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93283144811 = 359 ⋅259841629.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11844138239 is a prime.

It is a super-2 number, since 2×11844138239² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11844138239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11844138209) 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, 45206504 + ... + 45206765.

It is an arithmetic number, because the mean of its divisors is an integer number (2983637910).

Almost surely, 2^11844138239 is an apocalyptic number.

11844138239 is a deficient number, since it is larger than the sum of its proper divisors (90413401).

11844138239 is an equidigital number, since it uses as much as digits as its factorization.

11844138239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90413400.

The product of its digits is 165888, while the sum is 44.

The spelling of 11844138239 in words is "eleven billion, eight hundred forty-four million, one hundred thirty-eight thousand, two hundred thirty-nine".