530847809 has 4 divisors (see below), whose sum is σ = 531045060. Its totient is φ = 530650560.

The previous prime is 530847799. The next prime is 530847817. The reversal of 530847809 is 908748035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 423207184 + 107640625 = 20572^2 + 10375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-530847809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 530847809.

It is not an unprimeable number, because it can be changed into a prime (530847829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94532 + ... + 99989.

It is an arithmetic number, because the mean of its divisors is an integer number (132761265).

Almost surely, 2^530847809 is an apocalyptic number.

It is an amenable number.

530847809 is a deficient number, since it is larger than the sum of its proper divisors (197251).

530847809 is a wasteful number, since it uses less digits than its factorization.

530847809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197250.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 530847809 is about 23040.1347435296. The cubic root of 530847809 is about 809.6985155503.

The spelling of 530847809 in words is "five hundred thirty million, eight hundred forty-seven thousand, eight hundred nine".