5540839 has 2 divisors, whose sum is σ = 5540840. Its totient is φ = 5540838.

The previous prime is 5540819. The next prime is 5540849. The reversal of 5540839 is 9380455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5540839 - 2⁵ = 5540807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5540819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770419 + 2770420.

It is an arithmetic number, because the mean of its divisors is an integer number (2770420).

Almost surely, 2^5540839 is an apocalyptic number.

5540839 is a deficient number, since it is larger than the sum of its proper divisors (1).

5540839 is an equidigital number, since it uses as much as digits as its factorization.

5540839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 5540839 is about 2353.8986809122. The cubic root of 5540839 is about 176.9532364997.

The spelling of 5540839 in words is "five million, five hundred forty thousand, eight hundred thirty-nine".