493971317 has 4 divisors (see below), whose sum is σ = 564538656. Its totient is φ = 423403980.

The previous prime is 493971311. The next prime is 493971319. The reversal of 493971317 is 713179394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 493971317 - 2⁸ = 493971061 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 (493971311) 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, 35283659 + ... + 35283672.

It is an arithmetic number, because the mean of its divisors is an integer number (141134664).

Almost surely, 2^493971317 is an apocalyptic number.

It is an amenable number.

493971317 is a deficient number, since it is larger than the sum of its proper divisors (70567339).

493971317 is an equidigital number, since it uses as much as digits as its factorization.

493971317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70567338.

The product of its digits is 142884, while the sum is 44.

The square root of 493971317 is about 22225.4655069360. The cubic root of 493971317 is about 790.4976392451.

The spelling of 493971317 in words is "four hundred ninety-three million, nine hundred seventy-one thousand, three hundred seventeen".