548739439 has 4 divisors (see below), whose sum is σ = 549629424. Its totient is φ = 547849456.

The previous prime is 548739431. The next prime is 548739509. The reversal of 548739439 is 934937845.

548739439 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.

It is a cyclic number.

It is not a de Polignac number, because 548739439 - 2³ = 548739431 is a prime.

It is a super-2 number, since 2×548739439² = 602229943828069442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548739431) 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, 444067 + ... + 445300.

It is an arithmetic number, because the mean of its divisors is an integer number (137407356).

Almost surely, 2^548739439 is an apocalyptic number.

548739439 is a deficient number, since it is larger than the sum of its proper divisors (889985).

548739439 is an equidigital number, since it uses as much as digits as its factorization.

548739439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889984.

The product of its digits is 3265920, while the sum is 52.

The square root of 548739439 is about 23425.1881315818. The cubic root of 548739439 is about 818.6948497009.

The spelling of 548739439 in words is "five hundred forty-eight million, seven hundred thirty-nine thousand, four hundred thirty-nine".