530640839 has 4 divisors (see below), whose sum is σ = 561855024. Its totient is φ = 499426656.

The previous prime is 530640833. The next prime is 530640841. The reversal of 530640839 is 938046035.

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

It is a cyclic number.

It is not a de Polignac number, because 530640839 - 2¹⁶ = 530575303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530640833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15607067 + ... + 15607100.

It is an arithmetic number, because the mean of its divisors is an integer number (140463756).

Almost surely, 2^530640839 is an apocalyptic number.

530640839 is a deficient number, since it is larger than the sum of its proper divisors (31214185).

530640839 is a wasteful number, since it uses less digits than its factorization.

530640839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31214184.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 530640839 is about 23035.6427954594. The cubic root of 530640839 is about 809.5932718985.

The spelling of 530640839 in words is "five hundred thirty million, six hundred forty thousand, eight hundred thirty-nine".