539804820 has 48 divisors (see below), whose sum is σ = 1591007040. Its totient is φ = 136371456.

The previous prime is 539804819. The next prime is 539804821. The reversal of 539804820 is 28408935.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (539804819) and next prime (539804821).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539804821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235617 + ... + 237896.

It is an arithmetic number, because the mean of its divisors is an integer number (33145980).

Almost surely, 2^539804820 is an apocalyptic number.

It is an amenable number.

539804820 is an abundant number, since it is smaller than the sum of its proper divisors (1051202220).

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

539804820 is a wasteful number, since it uses less digits than its factorization.

539804820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473544 (or 473542 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 539804820 is about 23233.7000927532. The cubic root of 539804820 is about 814.2271620388.

The spelling of 539804820 in words is "five hundred thirty-nine million, eight hundred four thousand, eight hundred twenty".