493491 has 8 divisors (see below), whose sum is σ = 661504. Its totient is φ = 327240.

The previous prime is 493481. The next prime is 493523. The reversal of 493491 is 194394.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 493491 - 2⁹ = 492979 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (493481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (82688).

2⁴⁹³⁴⁹¹ is an apocalyptic number.

493491 is a deficient number, since it is larger than the sum of its proper divisors (168013).

493491 is a wasteful number, since it uses less digits than its factorization.

493491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881.

The product of its digits is 3888, while the sum is 30.

The square root of 493491 is about 702.4891458236. The cubic root of 493491 is about 79.0241340568.

Adding to 493491 its sum of digits (30), we get a triangular number (493521 = T₉₉₃).

The spelling of 493491 in words is "four hundred ninety-three thousand, four hundred ninety-one".