539809740 has 144 divisors (see below), whose sum is σ = 1679330016. Its totient is φ = 140313600.

The previous prime is 539809693. The next prime is 539809769. The reversal of 539809740 is 47908935.

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

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, 2316664 + ... + 2316896.

It is an arithmetic number, because the mean of its divisors is an integer number (11662014).

Almost surely, 2^539809740 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 539809740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839665008).

539809740 is an abundant number, since it is smaller than the sum of its proper divisors (1139520276).

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

539809740 is a wasteful number, since it uses less digits than its factorization.

539809740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 539809740 is about 23233.8059731935. The cubic root of 539809740 is about 814.2296357634.

The spelling of 539809740 in words is "five hundred thirty-nine million, eight hundred nine thousand, seven hundred forty".