539812 has 24 divisors (see below), whose sum is σ = 1163456. Its totient is φ = 213408.

The previous prime is 539797. The next prime is 539837. The reversal of 539812 is 218935.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

539812 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, 378 + ... + 1105.

2⁵³⁹⁸¹² is an apocalyptic number.

539812 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

539812 is an abundant number, since it is smaller than the sum of its proper divisors (623644).

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

539812 is a wasteful number, since it uses less digits than its factorization.

539812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1505 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 539812 is about 734.7189939018. The cubic root of 539812 is about 81.4230772063.

The spelling of 539812 in words is "five hundred thirty-nine thousand, eight hundred twelve".