539403220 has 24 divisors (see below), whose sum is σ = 1134620424. Its totient is φ = 215404416.

The previous prime is 539403209. The next prime is 539403239. The reversal of 539403220 is 22304935.

It can be written as a sum of positive squares in 4 ways, for example, as 17189316 + 522213904 = 4146^2 + 22852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9739 + ... + 34258.

It is an arithmetic number, because the mean of its divisors is an integer number (47275851).

Almost surely, 2^539403220 is an apocalyptic number.

It is an amenable number.

539403220 is an abundant number, since it is smaller than the sum of its proper divisors (595217204).

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

539403220 is a wasteful number, since it uses less digits than its factorization.

539403220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44619 (or 44617 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 539403220 is about 23225.0558664560. The cubic root of 539403220 is about 814.0251910417.

The spelling of 539403220 in words is "five hundred thirty-nine million, four hundred three thousand, two hundred twenty".