530736389 has 4 divisors (see below), whose sum is σ = 531423756. Its totient is φ = 530049024.

The previous prime is 530736377. The next prime is 530736407. The reversal of 530736389 is 983637035.

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 211935364 + 318801025 = 14558^2 + 17855^2 .

It is a cyclic number.

It is not a de Polignac number, because 530736389 - 2¹⁶ = 530670853 is a prime.

It is a super-2 number, since 2×530736389² = 563362229217518642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530736359) 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, 342524 + ... + 344069.

It is an arithmetic number, because the mean of its divisors is an integer number (132855939).

Almost surely, 2^530736389 is an apocalyptic number.

It is an amenable number.

530736389 is a deficient number, since it is larger than the sum of its proper divisors (687367).

530736389 is an equidigital number, since it uses as much as digits as its factorization.

530736389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687366.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 530736389 is about 23037.7166620305. The cubic root of 530736389 is about 809.6418621997.

The spelling of 530736389 in words is "five hundred thirty million, seven hundred thirty-six thousand, three hundred eighty-nine".