539409888 has 96 divisors (see below), whose sum is σ = 1609977600. Its totient is φ = 175609728.

The previous prime is 539409883. The next prime is 539409953. The reversal of 539409888 is 888904935.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-4 number, since 4×539409888⁴ (a number of 36 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539409883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29893 + ... + 44411.

It is an arithmetic number, because the mean of its divisors is an integer number (16770600).

Almost surely, 2^539409888 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 539409888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804988800).

539409888 is an abundant number, since it is smaller than the sum of its proper divisors (1070567712).

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

539409888 is a wasteful number, since it uses less digits than its factorization.

539409888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14581 (or 14567 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 539409888 is about 23225.1994178737. The cubic root of 539409888 is about 814.0285453027.

The spelling of 539409888 in words is "five hundred thirty-nine million, four hundred nine thousand, eight hundred eighty-eight".