540789 has 4 divisors (see below), whose sum is σ = 721056. Its totient is φ = 360524.

The previous prime is 540781. The next prime is 540803. The reversal of 540789 is 987045.

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 540789 - 2³ = 540781 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90129 + ... + 90134.

It is an arithmetic number, because the mean of its divisors is an integer number (180264).

2⁵⁴⁰⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

540789 is a deficient number, since it is larger than the sum of its proper divisors (180267).

540789 is a wasteful number, since it uses less digits than its factorization.

540789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180266.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 540789 is about 735.3835733819. The cubic root of 540789 is about 81.4721698547.

The spelling of 540789 in words is "five hundred forty thousand, seven hundred eighty-nine".