5991239 has 2 divisors, whose sum is σ = 5991240. Its totient is φ = 5991238.

The previous prime is 5991229. The next prime is 5991241. The reversal of 5991239 is 9321995.

5991239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5991239 is a prime.

Together with 5991241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5991229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2995619 + 2995620.

It is an arithmetic number, because the mean of its divisors is an integer number (2995620).

Almost surely, 2^5991239 is an apocalyptic number.

5991239 is a deficient number, since it is larger than the sum of its proper divisors (1).

5991239 is an equidigital number, since it uses as much as digits as its factorization.

5991239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870, while the sum is 38.

The square root of 5991239 is about 2447.7007578542. The cubic root of 5991239 is about 181.6235729036.

The spelling of 5991239 in words is "five million, nine hundred ninety-one thousand, two hundred thirty-nine".