244139 has 4 divisors (see below), whose sum is σ = 279024. Its totient is φ = 209256.

The previous prime is 244129. The next prime is 244141. The reversal of 244139 is 931442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931442 = 2 ⋅465721.

It is a cyclic number.

It is not a de Polignac number, because 244139 - 2¹² = 240043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244109) 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, 17432 + ... + 17445.

It is an arithmetic number, because the mean of its divisors is an integer number (69756).

2²⁴⁴¹³⁹ is an apocalyptic number.

244139 is a deficient number, since it is larger than the sum of its proper divisors (34885).

244139 is an equidigital number, since it uses as much as digits as its factorization.

244139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34884.

The product of its digits is 864, while the sum is 23.

The square root of 244139 is about 494.1042400142. The cubic root of 244139 is about 62.4998613330.

It can be divided in two parts, 244 and 139, that added together give a palindrome (383).

The spelling of 244139 in words is "two hundred forty-four thousand, one hundred thirty-nine".