538905 has 16 divisors (see below), whose sum is σ = 886464. Its totient is φ = 279360.

The previous prime is 538877. The next prime is 538921. The reversal of 538905 is 509835.

It is not a de Polignac number, because 538905 - 2⁶ = 538841 is a prime.

538905 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70 + ... + 1040.

It is an arithmetic number, because the mean of its divisors is an integer number (55404).

2⁵³⁸⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

538905 is a deficient number, since it is larger than the sum of its proper divisors (347559).

538905 is a wasteful number, since it uses less digits than its factorization.

538905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 538905 is about 734.1014916209. The cubic root of 538905 is about 81.3774488941.

The spelling of 538905 in words is "five hundred thirty-eight thousand, nine hundred five".