540863999 has 16 divisors (see below), whose sum is σ = 592711392. Its totient is φ = 490520448.

The previous prime is 540863987. The next prime is 540864011. The reversal of 540863999 is 999368045.

It is an interprime number because it is at equal distance from previous prime (540863987) and next prime (540864011).

It is a cyclic number.

It is not a de Polignac number, because 540863999 - 2²⁸ = 272428543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540863999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540863969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533417 + ... + 534429.

It is an arithmetic number, because the mean of its divisors is an integer number (37044462).

Almost surely, 2^540863999 is an apocalyptic number.

540863999 is a deficient number, since it is larger than the sum of its proper divisors (51847393).

540863999 is a wasteful number, since it uses less digits than its factorization.

540863999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 540863999 is about 23256.4829456219. The cubic root of 540863999 is about 814.7593598704.

It can be divided in two parts, 54086 and 3999, that added together give a palindrome (58085).

The spelling of 540863999 in words is "five hundred forty million, eight hundred sixty-three thousand, nine hundred ninety-nine".