491363 has 8 divisors (see below), whose sum is σ = 511488. Its totient is φ = 471744.

The previous prime is 491357. The next prime is 491371. The reversal of 491363 is 363194.

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

It is a cyclic number.

It is not a de Polignac number, because 491363 - 2⁶ = 491299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491333) 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, 3806 + ... + 3932.

It is an arithmetic number, because the mean of its divisors is an integer number (63936).

2⁴⁹¹³⁶³ is an apocalyptic number.

491363 is a deficient number, since it is larger than the sum of its proper divisors (20125).

491363 is a wasteful number, since it uses less digits than its factorization.

491363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253.

The product of its digits is 1944, while the sum is 26.

The square root of 491363 is about 700.9728953390. The cubic root of 491363 is about 78.9103828081.

The spelling of 491363 in words is "four hundred ninety-one thousand, three hundred sixty-three".