22739 has 2 divisors, whose sum is σ = 22740. Its totient is φ = 22738.

The previous prime is 22727. The next prime is 22741. The reversal of 22739 is 93722.

22739 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22739 - 2⁸ = 22483 is a prime.

Together with 22741, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (22709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11369 + 11370.

It is an arithmetic number, because the mean of its divisors is an integer number (11370).

2²²⁷³⁹ is an apocalyptic number.

22739 is a deficient number, since it is larger than the sum of its proper divisors (1).

22739 is an equidigital number, since it uses as much as digits as its factorization.

22739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 23.

The square root of 22739 is about 150.7945622362. The cubic root of 22739 is about 28.3306879499.

The spelling of 22739 in words is "twenty-two thousand, seven hundred thirty-nine".