6549139 has 2 divisors, whose sum is σ = 6549140. Its totient is φ = 6549138.

The previous prime is 6549133. The next prime is 6549161. The reversal of 6549139 is 9319456.

6549139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6549139 is a prime.

6549139 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6549098 and 6549107.

It is not a weakly prime, because it can be changed into another prime (6549133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3274569 + 3274570.

It is an arithmetic number, because the mean of its divisors is an integer number (3274570).

Almost surely, 2^6549139 is an apocalyptic number.

6549139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6549139 is an equidigital number, since it uses as much as digits as its factorization.

6549139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 6549139 is about 2559.1285626166. The cubic root of 6549139 is about 187.0946645297.

The spelling of 6549139 in words is "six million, five hundred forty-nine thousand, one hundred thirty-nine".