539811 has 8 divisors (see below), whose sum is σ = 799760. Its totient is φ = 359856.

The previous prime is 539797. The next prime is 539837. The reversal of 539811 is 118935.

It is not a de Polignac number, because 539811 - 2¹⁴ = 523427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 19993 = 539811 / (5 + 3 + 9 + 8 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9970 + ... + 10023.

It is an arithmetic number, because the mean of its divisors is an integer number (99970).

2⁵³⁹⁸¹¹ is an apocalyptic number.

539811 is a deficient number, since it is larger than the sum of its proper divisors (259949).

539811 is a wasteful number, since it uses less digits than its factorization.

539811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20002 (or 19996 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 539811 is about 734.7183133691. The cubic root of 539811 is about 81.4230269276.

The spelling of 539811 in words is "five hundred thirty-nine thousand, eight hundred eleven".