539405 has 4 divisors (see below), whose sum is σ = 647292. Its totient is φ = 431520.

The previous prime is 539401. The next prime is 539447. The reversal of 539405 is 504935.

539405 = T₄₆₂ + T₄₆₃ + ... + T₄₆₆.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504935 = 5 ⋅100987.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 376996 = 403^2 + 614^2 .

It is not a de Polignac number, because 539405 - 2² = 539401 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 53936 + ... + 53945.

It is an arithmetic number, because the mean of its divisors is an integer number (161823).

2⁵³⁹⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

539405 is a deficient number, since it is larger than the sum of its proper divisors (107887).

539405 is a wasteful number, since it uses less digits than its factorization.

539405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107886.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 539405 is about 734.4419650320. The cubic root of 539405 is about 81.4026086453.

The spelling of 539405 in words is "five hundred thirty-nine thousand, four hundred five".