540999 has 10 divisors (see below), whose sum is σ = 808280. Its totient is φ = 360612.

The previous prime is 540989. The next prime is 541001. The reversal of 540999 is 999045.

It is not a de Polignac number, because 540999 - 2⁷ = 540871 is a prime.

It is a Duffinian number.

540999 is a modest number, since divided by 999 gives 540 as remainder.

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 540999.

It is not an unprimeable number, because it can be changed into a prime (540989) 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 9 ways as a sum of consecutive naturals, for example, 3259 + ... + 3420.

It is an arithmetic number, because the mean of its divisors is an integer number (80828).

2⁵⁴⁰⁹⁹⁹ is an apocalyptic number.

540999 is a deficient number, since it is larger than the sum of its proper divisors (267281).

540999 is an equidigital number, since it uses as much as digits as its factorization.

540999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691 (or 6682 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 540999 is about 735.5263421523. The cubic root of 540999 is about 81.4827142886.

The spelling of 540999 in words is "five hundred forty thousand, nine hundred ninety-nine".