5239391 has 2 divisors, whose sum is σ = 5239392. Its totient is φ = 5239390.

The previous prime is 5239373. The next prime is 5239393. The reversal of 5239391 is 1939325.

5239391 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 not a de Polignac number, because 5239391 - 2¹⁰ = 5238367 is a prime.

Together with 5239393, 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 (5239393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2619695 + 2619696.

It is an arithmetic number, because the mean of its divisors is an integer number (2619696).

Almost surely, 2^5239391 is an apocalyptic number.

5239391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5239391 is an equidigital number, since it uses as much as digits as its factorization.

5239391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 32.

The square root of 5239391 is about 2288.9716031441. The cubic root of 5239391 is about 173.6841829282.

The spelling of 5239391 in words is "five million, two hundred thirty-nine thousand, three hundred ninety-one".