539406 has 32 divisors (see below), whose sum is σ = 1370880. Its totient is φ = 154008.

The previous prime is 539401. The next prime is 539447. The reversal of 539406 is 604935.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 539406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336 + ... + 1091.

It is an arithmetic number, because the mean of its divisors is an integer number (42840).

2⁵³⁹⁴⁰⁶ is an apocalyptic number.

539406 is an abundant number, since it is smaller than the sum of its proper divisors (831474).

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

539406 is a wasteful number, since it uses less digits than its factorization.

539406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 539406 is about 734.4426458206. The cubic root of 539406 is about 81.4026589492.

The spelling of 539406 in words is "five hundred thirty-nine thousand, four hundred six".