811449 has 12 divisors (see below), whose sum is σ = 1212900. Its totient is φ = 522144.

The previous prime is 811441. The next prime is 811457. The reversal of 811449 is 944118.

811449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (811441) and next prime (811457).

It can be written as a sum of positive squares in 2 ways, for example, as 275625 + 535824 = 525^2 + 732^2 .

It is not a de Polignac number, because 811449 - 2³ = 811441 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

811449 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1294 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (101075).

2⁸¹¹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

811449 is a deficient number, since it is larger than the sum of its proper divisors (401451).

811449 is a wasteful number, since it uses less digits than its factorization.

811449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144 (or 3141 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 811449 is about 900.8046403078. The cubic root of 811449 is about 93.2725270035.

The spelling of 811449 in words is "eight hundred eleven thousand, four hundred forty-nine".