811149 has 8 divisors (see below), whose sum is σ = 1090560. Its totient is φ = 536256.

The previous prime is 811147. The next prime is 811157. The reversal of 811149 is 941118.

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

It is not a de Polignac number, because 811149 - 2¹ = 811147 is a prime.

811149 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 811149.

It is not an unprimeable number, because it can be changed into a prime (811147) 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, 684 + ... + 1445.

It is an arithmetic number, because the mean of its divisors is an integer number (136320).

2⁸¹¹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

811149 is a deficient number, since it is larger than the sum of its proper divisors (279411).

811149 is a wasteful number, since it uses less digits than its factorization.

811149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259.

The product of its digits is 288, while the sum is 24.

The square root of 811149 is about 900.6381071218. The cubic root of 811149 is about 93.2610310223.

The spelling of 811149 in words is "eight hundred eleven thousand, one hundred forty-nine".