538446317 has 4 divisors (see below), whose sum is σ = 551579196. Its totient is φ = 525313440.

The previous prime is 538446269. The next prime is 538446367. The reversal of 538446317 is 713644835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 713644835 = 5 ⋅142728967.

It can be written as a sum of positive squares in 2 ways, for example, as 6728836 + 531717481 = 2594^2 + 23059^2 .

It is a cyclic number.

It is not a de Polignac number, because 538446317 - 2²⁴ = 521669101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 13132837 = 538446317 / (5 + 3 + 8 + 4 + 4 + 6 + 3 + 1 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538446367) 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, 6566378 + ... + 6566459.

It is an arithmetic number, because the mean of its divisors is an integer number (137894799).

Almost surely, 2^538446317 is an apocalyptic number.

It is an amenable number.

538446317 is a deficient number, since it is larger than the sum of its proper divisors (13132879).

538446317 is a wasteful number, since it uses less digits than its factorization.

538446317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132878.

The product of its digits is 241920, while the sum is 41.

The square root of 538446317 is about 23204.4460610461. The cubic root of 538446317 is about 813.5435450368.

The spelling of 538446317 in words is "five hundred thirty-eight million, four hundred forty-six thousand, three hundred seventeen".