5539439 has 2 divisors, whose sum is σ = 5539440. Its totient is φ = 5539438.

The previous prime is 5539427. The next prime is 5539477. The reversal of 5539439 is 9349355.

It is an a-pointer prime, because the next prime (5539477) can be obtained adding 5539439 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5539439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5539409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769719 + 2769720.

It is an arithmetic number, because the mean of its divisors is an integer number (2769720).

Almost surely, 2^5539439 is an apocalyptic number.

5539439 is a deficient number, since it is larger than the sum of its proper divisors (1).

5539439 is an equidigital number, since it uses as much as digits as its factorization.

5539439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 38.

The square root of 5539439 is about 2353.6012831404. The cubic root of 5539439 is about 176.9383316932.

The spelling of 5539439 in words is "five million, five hundred thirty-nine thousand, four hundred thirty-nine".