1092491 has 4 divisors (see below), whose sum is σ = 1106400. Its totient is φ = 1078584.

The previous prime is 1092479. The next prime is 1092493. The reversal of 1092491 is 1942901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1092491 - 2¹⁴ = 1076107 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 1092491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1092493) 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, 6836 + ... + 6993.

It is an arithmetic number, because the mean of its divisors is an integer number (276600).

2^1092491 is an apocalyptic number.

1092491 is a deficient number, since it is larger than the sum of its proper divisors (13909).

1092491 is an equidigital number, since it uses as much as digits as its factorization.

1092491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13908.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1092491 is about 1045.2229427256. Note that the first 3 decimals coincide. The cubic root of 1092491 is about 102.9925843783.

The spelling of 1092491 in words is "one million, ninety-two thousand, four hundred ninety-one".