491134249 has 16 divisors (see below), whose sum is σ = 541946880. Its totient is φ = 443005200.

The previous prime is 491134229. The next prime is 491134253. The reversal of 491134249 is 942431194.

It is a cyclic number.

It is not a de Polignac number, because 491134249 - 2¹⁹ = 490609961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491134229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96724 + ... + 101674.

It is an arithmetic number, because the mean of its divisors is an integer number (33871680).

Almost surely, 2^491134249 is an apocalyptic number.

It is an amenable number.

491134249 is a deficient number, since it is larger than the sum of its proper divisors (50812631).

491134249 is a wasteful number, since it uses less digits than its factorization.

491134249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220.

The product of its digits is 31104, while the sum is 37.

The square root of 491134249 is about 22161.5488854006. The cubic root of 491134249 is about 788.9813549407.

The spelling of 491134249 in words is "four hundred ninety-one million, one hundred thirty-four thousand, two hundred forty-nine".