549380909 has 8 divisors (see below), whose sum is σ = 684942528. Its totient is φ = 428088960.

The previous prime is 549380879. The next prime is 549380927. The reversal of 549380909 is 909083945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549380909 - 2¹² = 549376813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549380929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3567332 + ... + 3567485.

It is an arithmetic number, because the mean of its divisors is an integer number (85617816).

Almost surely, 2^549380909 is an apocalyptic number.

It is an amenable number.

549380909 is a deficient number, since it is larger than the sum of its proper divisors (135561619).

549380909 is a wasteful number, since it uses less digits than its factorization.

549380909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134835.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 549380909 is about 23438.8760182736. The cubic root of 549380909 is about 819.0137403815.

The spelling of 549380909 in words is "five hundred forty-nine million, three hundred eighty thousand, nine hundred nine".