549739 has 2 divisors, whose sum is σ = 549740. Its totient is φ = 549738.

The previous prime is 549737. The next prime is 549749. The reversal of 549739 is 937945.

549739 is digitally balanced in base 2, 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 not a de Polignac number, because 549739 - 2¹ = 549737 is a prime.

Together with 549737, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 549698 and 549707.

It is not a weakly prime, because it can be changed into another prime (549733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274869 + 274870.

It is an arithmetic number, because the mean of its divisors is an integer number (274870).

2⁵⁴⁹⁷³⁹ is an apocalyptic number.

549739 is a deficient number, since it is larger than the sum of its proper divisors (1).

549739 is an equidigital number, since it uses as much as digits as its factorization.

549739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 37.

The square root of 549739 is about 741.4438616645. The cubic root of 549739 is about 81.9191648366.

The spelling of 549739 in words is "five hundred forty-nine thousand, seven hundred thirty-nine".