493391 has 4 divisors (see below), whose sum is σ = 522432. Its totient is φ = 464352.

The previous prime is 493369. The next prime is 493393. The reversal of 493391 is 193394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193394 = 2 ⋅96697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493391 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493393) 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, 14495 + ... + 14528.

It is an arithmetic number, because the mean of its divisors is an integer number (130608).

2⁴⁹³³⁹¹ is an apocalyptic number.

493391 is a deficient number, since it is larger than the sum of its proper divisors (29041).

493391 is a wasteful number, since it uses less digits than its factorization.

493391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29040.

The product of its digits is 2916, while the sum is 29.

The square root of 493391 is about 702.4179667406. The cubic root of 493391 is about 79.0187959336.

The spelling of 493391 in words is "four hundred ninety-three thousand, three hundred ninety-one".