549234709 has 4 divisors (see below), whose sum is σ = 549387916. Its totient is φ = 549081504.

The previous prime is 549234659. The next prime is 549234713. The reversal of 549234709 is 907432945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 907432945 = 5 ⋅181486589.

It can be written as a sum of positive squares in 2 ways, for example, as 199656900 + 349577809 = 14130^2 + 18697^2 .

It is a cyclic number.

It is not a de Polignac number, because 549234709 - 2¹¹ = 549232661 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549234739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71094 + ... + 78439.

It is an arithmetic number, because the mean of its divisors is an integer number (137346979).

Almost surely, 2^549234709 is an apocalyptic number.

It is an amenable number.

549234709 is a deficient number, since it is larger than the sum of its proper divisors (153207).

549234709 is a wasteful number, since it uses less digits than its factorization.

549234709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153206.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 549234709 is about 23435.7570605261. The cubic root of 549234709 is about 818.9410825770.

The spelling of 549234709 in words is "five hundred forty-nine million, two hundred thirty-four thousand, seven hundred nine".