539994 has 64 divisors (see below), whose sum is σ = 1419264. Its totient is φ = 133056.

The previous prime is 539993. The next prime is 540041. The reversal of 539994 is 499935.

It is a happy number.

539994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 539994.

It is not an unprimeable number, because it can be changed into a prime (539993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12537 + ... + 12579.

It is an arithmetic number, because the mean of its divisors is an integer number (22176).

2⁵³⁹⁹⁹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 539994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709632).

539994 is an abundant number, since it is smaller than the sum of its proper divisors (879270).

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

539994 is a wasteful number, since it uses less digits than its factorization.

539994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91.

The product of its digits is 43740, while the sum is 39.

The square root of 539994 is about 734.8428403407. The cubic root of 539994 is about 81.4322268948.

The spelling of 539994 in words is "five hundred thirty-nine thousand, nine hundred ninety-four".