543869 has 4 divisors (see below), whose sum is σ = 548796. Its totient is φ = 538944.

The previous prime is 543859. The next prime is 543871. The reversal of 543869 is 968345.

543869 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 can be written as a sum of positive squares in 2 ways, for example, as 168100 + 375769 = 410^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 543869 - 2⁴ = 543853 is a prime.

It is a super-2 number, since 2×543869² = 591586978322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 543869.

It is not an unprimeable number, because it can be changed into a prime (543859) 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, 2294 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (137199).

2⁵⁴³⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

543869 is a deficient number, since it is larger than the sum of its proper divisors (4927).

543869 is a wasteful number, since it uses less digits than its factorization.

543869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926.

The product of its digits is 25920, while the sum is 35.

The square root of 543869 is about 737.4747453303. The cubic root of 543869 is about 81.6265488552.

The spelling of 543869 in words is "five hundred forty-three thousand, eight hundred sixty-nine".