539539920 has 320 divisors, whose sum is σ = 1965469440. Its totient is φ = 135862272.

The previous prime is 539539909. The next prime is 539539921. The reversal of 539539920 is 29935935.

539539920 is a `hidden beast` number, since 539 + 5 + 3 + 99 + 20 = 666.

It is a super-2 number, since 2×539539920² = 582206650547212800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539539921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3436482 + ... + 3436638.

It is an arithmetic number, because the mean of its divisors is an integer number (6142092).

Almost surely, 2^539539920 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 539539920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982734720).

539539920 is an abundant number, since it is smaller than the sum of its proper divisors (1425929520).

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

539539920 is a wasteful number, since it uses less digits than its factorization.

539539920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 328050, while the sum is 45.

The square root of 539539920 is about 23227.9986223523. The cubic root of 539539920 is about 814.0939508862.

The spelling of 539539920 in words is "five hundred thirty-nine million, five hundred thirty-nine thousand, nine hundred twenty".