539644540 has 12 divisors (see below), whose sum is σ = 1133253576. Its totient is φ = 215857808.

The previous prime is 539644537. The next prime is 539644541. The reversal of 539644540 is 45446935.

It is a junction number, because it is equal to n+sod(n) for n = 539644493 and 539644502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539644541) 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, 13491094 + ... + 13491133.

It is an arithmetic number, because the mean of its divisors is an integer number (94437798).

Almost surely, 2^539644540 is an apocalyptic number.

It is an amenable number.

539644540 is an abundant number, since it is smaller than the sum of its proper divisors (593609036).

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

539644540 is a wasteful number, since it uses less digits than its factorization.

539644540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26982236 (or 26982234 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 539644540 is about 23230.2505367463. The cubic root of 539644540 is about 814.1465667055.

The spelling of 539644540 in words is "five hundred thirty-nine million, six hundred forty-four thousand, five hundred forty".