1089394823 has 6 divisors (see below), whose sum is σ = 1197434112. Its totient is φ = 990358820.

The previous prime is 1089394783. The next prime is 1089394829. The reversal of 1089394823 is 3284939801.

It is a happy number.

It is not a de Polignac number, because 1089394823 - 2⁸ = 1089394567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089394829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4501511 + ... + 4501752.

It is an arithmetic number, because the mean of its divisors is an integer number (199572352).

Almost surely, 2^1089394823 is an apocalyptic number.

1089394823 is a deficient number, since it is larger than the sum of its proper divisors (108039289).

1089394823 is an equidigital number, since it uses as much as digits as its factorization.

1089394823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9003285 (or 9003274 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1089394823 is about 33005.9816245480. The cubic root of 1089394823 is about 1028.9519685135.

The spelling of 1089394823 in words is "one billion, eighty-nine million, three hundred ninety-four thousand, eight hundred twenty-three".