539644 has 12 divisors (see below), whose sum is σ = 1079344. Its totient is φ = 231264.

The previous prime is 539641. The next prime is 539653. The reversal of 539644 is 446935.

539644 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539641) 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, 9609 + ... + 9664.

2⁵³⁹⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

539644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

539644 is a wasteful number, since it uses less digits than its factorization.

539644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19284 (or 19282 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 539644 is about 734.6046555801. The cubic root of 539644 is about 81.4146295144.

The spelling of 539644 in words is "five hundred thirty-nine thousand, six hundred forty-four".