530939905 has 4 divisors (see below), whose sum is σ = 637127892. Its totient is φ = 424751920.

The previous prime is 530939891. The next prime is 530939909. The reversal of 530939905 is 509939035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509939035 = 5 ⋅101987807.

It can be written as a sum of positive squares in 2 ways, for example, as 382124304 + 148815601 = 19548^2 + 12199^2 .

It is not a de Polignac number, because 530939905 - 2¹¹ = 530937857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530939909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53093986 + ... + 53093995.

It is an arithmetic number, because the mean of its divisors is an integer number (159281973).

It is a Proth number, since it is equal to 16203 ⋅ 2¹⁵ + 1 and 16203 < 2¹⁵.

Almost surely, 2^530939905 is an apocalyptic number.

It is an amenable number.

530939905 is a deficient number, since it is larger than the sum of its proper divisors (106187987).

530939905 is a wasteful number, since it uses less digits than its factorization.

530939905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106187986.

The product of its (nonzero) digits is 164025, while the sum is 43.

The square root of 530939905 is about 23042.1332562764. The cubic root of 530939905 is about 809.7453373081.

The spelling of 530939905 in words is "five hundred thirty million, nine hundred thirty-nine thousand, nine hundred five".