491449 has 4 divisors (see below), whose sum is σ = 561664. Its totient is φ = 421236.

The previous prime is 491429. The next prime is 491461. The reversal of 491449 is 944194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 491449 - 2⁵ = 491417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 491449.

It is not an unprimeable number, because it can be changed into a prime (491429) 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, 35097 + ... + 35110.

It is an arithmetic number, because the mean of its divisors is an integer number (140416).

2⁴⁹¹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

491449 is a deficient number, since it is larger than the sum of its proper divisors (70215).

491449 is an equidigital number, since it uses as much as digits as its factorization.

491449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70214.

The product of its digits is 5184, while the sum is 31.

The square root of 491449 is about 701.0342359685. The cubic root of 491449 is about 78.9149862595.

The spelling of 491449 in words is "four hundred ninety-one thousand, four hundred forty-nine".