491193 has 6 divisors (see below), whose sum is σ = 709514. Its totient is φ = 327456.

The previous prime is 491171. The next prime is 491201. The reversal of 491193 is 391194.

It can be written as a sum of positive squares in only one way, i.e., 419904 + 71289 = 648^2 + 267^2 .

It is not a de Polignac number, because 491193 - 2⁶ = 491129 is a prime.

It is a Duffinian number.

491193 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491193.

It is not an unprimeable number, because it can be changed into a prime (491593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27280 + ... + 27297.

2⁴⁹¹¹⁹³ is an apocalyptic number.

It is an amenable number.

491193 is a deficient number, since it is larger than the sum of its proper divisors (218321).

491193 is a wasteful number, since it uses less digits than its factorization.

491193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54583 (or 54580 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 491193 is about 700.8516248108. The cubic root of 491193 is about 78.9012813817.

Subtracting from 491193 its reverse (391194), we obtain a palindrome (99999).

The spelling of 491193 in words is "four hundred ninety-one thousand, one hundred ninety-three".