540099 has 12 divisors (see below), whose sum is σ = 891696. Its totient is φ = 308592.

The previous prime is 540079. The next prime is 540101. The reversal of 540099 is 990045.

It is a happy number.

540099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 540099 - 2⁸ = 539843 is a prime.

540099 is a modest number, since divided by 99 gives 54 as remainder.

It is not an unprimeable number, because it can be changed into a prime (540079) 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, 4224 + ... + 4349.

It is an arithmetic number, because the mean of its divisors is an integer number (74308).

2⁵⁴⁰⁰⁹⁹ is an apocalyptic number.

540099 is a deficient number, since it is larger than the sum of its proper divisors (351597).

540099 is a wasteful number, since it uses less digits than its factorization.

540099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586 (or 8583 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 540099 is about 734.9142807158. The cubic root of 540099 is about 81.4375046261.

It can be divided in two parts, 5 and 40099, that added together give a palindrome (40104).

The spelling of 540099 in words is "five hundred forty thousand, ninety-nine".