549056709 has 12 divisors (see below), whose sum is σ = 794823276. Its totient is φ = 365234112.

The previous prime is 549056693. The next prime is 549056719. The reversal of 549056709 is 907650945.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 469935684 + 79121025 = 21678^2 + 8895^2 .

It is not a de Polignac number, because 549056709 - 2⁴ = 549056693 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549056719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62634 + ... + 70859.

It is an arithmetic number, because the mean of its divisors is an integer number (66235273).

Almost surely, 2^549056709 is an apocalyptic number.

It is an amenable number.

549056709 is a deficient number, since it is larger than the sum of its proper divisors (245766567).

549056709 is a wasteful number, since it uses less digits than its factorization.

549056709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133956 (or 133953 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 549056709 is about 23431.9591370419. The cubic root of 549056709 is about 818.8526035469.

The spelling of 549056709 in words is "five hundred forty-nine million, fifty-six thousand, seven hundred nine".