539940 has 24 divisors (see below), whose sum is σ = 1512000. Its totient is φ = 143968.

The previous prime is 539921. The next prime is 539947. The reversal of 539940 is 49935.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 539898 and 539907.

It is not an unprimeable number, because it can be changed into a prime (539947) by changing a digit.

539940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4440 + ... + 4559.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2⁵³⁹⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

539940 is an abundant number, since it is smaller than the sum of its proper divisors (972060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

539940 is a wasteful number, since it uses less digits than its factorization.

539940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9011 (or 9009 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 539940 is about 734.8060968718. The cubic root of 539940 is about 81.4295123666.

The spelling of 539940 in words is "five hundred thirty-nine thousand, nine hundred forty".