811492 has 12 divisors (see below), whose sum is σ = 1549296. Its totient is φ = 368840.

The previous prime is 811469. The next prime is 811493. The reversal of 811492 is 294118.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (811493) by changing a digit.

811492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9178 + ... + 9265.

It is an arithmetic number, because the mean of its divisors is an integer number (129108).

2⁸¹¹⁴⁹² is an apocalyptic number.

It is an amenable number.

811492 is a deficient number, since it is larger than the sum of its proper divisors (737804).

811492 is a wasteful number, since it uses less digits than its factorization.

811492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18458 (or 18456 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 811492 is about 900.8285075418. The cubic root of 811492 is about 93.2741745286.

The spelling of 811492 in words is "eight hundred eleven thousand, four hundred ninety-two".