549218893 has 4 divisors (see below), whose sum is σ = 551517120. Its totient is φ = 546920668.

The previous prime is 549218851. The next prime is 549218927. The reversal of 549218893 is 398812945.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 549218893 - 2²¹ = 547121741 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 (549218843) 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, 1148755 + ... + 1149232.

It is an arithmetic number, because the mean of its divisors is an integer number (137879280).

Almost surely, 2^549218893 is an apocalyptic number.

It is an amenable number.

549218893 is a deficient number, since it is larger than the sum of its proper divisors (2298227).

549218893 is a wasteful number, since it uses less digits than its factorization.

549218893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298226.

The product of its digits is 622080, while the sum is 49.

The square root of 549218893 is about 23435.4196250035. The cubic root of 549218893 is about 818.9332216411.

The spelling of 549218893 in words is "five hundred forty-nine million, two hundred eighteen thousand, eight hundred ninety-three".