493142917 has 4 divisors (see below), whose sum is σ = 494898156. Its totient is φ = 491387680.

The previous prime is 493142911. The next prime is 493142989. The reversal of 493142917 is 719241394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 719241394 = 2 ⋅359620697.

It can be written as a sum of positive squares in 2 ways, for example, as 329277316 + 163865601 = 18146^2 + 12801^2 .

It is a cyclic number.

It is not a de Polignac number, because 493142917 - 2⁷ = 493142789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 493142917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493142911) 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, 877198 + ... + 877759.

It is an arithmetic number, because the mean of its divisors is an integer number (123724539).

Almost surely, 2^493142917 is an apocalyptic number.

It is an amenable number.

493142917 is a deficient number, since it is larger than the sum of its proper divisors (1755239).

493142917 is a wasteful number, since it uses less digits than its factorization.

493142917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755238.

The product of its digits is 54432, while the sum is 40.

The square root of 493142917 is about 22206.8214069461. The cubic root of 493142917 is about 790.0554984244.

The spelling of 493142917 in words is "four hundred ninety-three million, one hundred forty-two thousand, nine hundred seventeen".