549679 has 4 divisors (see below), whose sum is σ = 591976. Its totient is φ = 507384.

The previous prime is 549667. The next prime is 549683. The reversal of 549679 is 976945.

549679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976945 = 5 ⋅195389.

It is a cyclic number.

It is not a de Polignac number, because 549679 - 2⁷ = 549551 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 (549649) 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, 21129 + ... + 21154.

It is an arithmetic number, because the mean of its divisors is an integer number (147994).

2⁵⁴⁹⁶⁷⁹ is an apocalyptic number.

549679 is a deficient number, since it is larger than the sum of its proper divisors (42297).

549679 is a wasteful number, since it uses less digits than its factorization.

549679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42296.

The product of its digits is 68040, while the sum is 40.

The square root of 549679 is about 741.4033989671. The cubic root of 549679 is about 81.9161844352.

The spelling of 549679 in words is "five hundred forty-nine thousand, six hundred seventy-nine".