1089923 has 4 divisors (see below), whose sum is σ = 1095600. Its totient is φ = 1084248.

The previous prime is 1089919. The next prime is 1089941. The reversal of 1089923 is 3299801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3299801 = 463 ⋅7127.

It is a cyclic number.

It is not a de Polignac number, because 1089923 - 2² = 1089919 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1089923.

It is not an unprimeable number, because it can be changed into a prime (1089943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2540 + ... + 2937.

It is an arithmetic number, because the mean of its divisors is an integer number (273900).

2^1089923 is an apocalyptic number.

1089923 is a deficient number, since it is larger than the sum of its proper divisors (5677).

1089923 is an equidigital number, since it uses as much as digits as its factorization.

1089923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1089923 is about 1043.9937739278. The cubic root of 1089923 is about 102.9118232371.

The spelling of 1089923 in words is "one million, eighty-nine thousand, nine hundred twenty-three".