543949 has 12 divisors (see below), whose sum is σ = 671004. Its totient is φ = 438144.

The previous prime is 543929. The next prime is 543967. The reversal of 543949 is 949345.

It can be written as a sum of positive squares in 2 ways, for example, as 275625 + 268324 = 525^2 + 518^2 .

It is not a de Polignac number, because 543949 - 2¹¹ = 541901 is a prime.

It is a Duffinian number.

543949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 507 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (55917).

2⁵⁴³⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

543949 is a deficient number, since it is larger than the sum of its proper divisors (127055).

543949 is a wasteful number, since it uses less digits than its factorization.

543949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 677 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 543949 is about 737.5289824814. The cubic root of 543949 is about 81.6305509242.

The spelling of 543949 in words is "five hundred forty-three thousand, nine hundred forty-nine".