539965440 has 576 divisors, whose sum is σ = 2289530880. Its totient is φ = 119439360.

The previous prime is 539965423. The next prime is 539965453. The reversal of 539965440 is 44569935.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17418225 + ... + 17418255.

It is an arithmetic number, because the mean of its divisors is an integer number (3974880).

Almost surely, 2^539965440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 539965440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144765440).

539965440 is an abundant number, since it is smaller than the sum of its proper divisors (1749565440).

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

539965440 is an equidigital number, since it uses as much as digits as its factorization.

539965440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 539965440 is about 23237.1564525438. The cubic root of 539965440 is about 814.3079123351.

The spelling of 539965440 in words is "five hundred thirty-nine million, nine hundred sixty-five thousand, four hundred forty".