1089445 has 16 divisors (see below), whose sum is σ = 1582848. Its totient is φ = 702720.

The previous prime is 1089427. The next prime is 1089457. The reversal of 1089445 is 5449801.

It is a happy number.

It is not a de Polignac number, because 1089445 - 2⁹ = 1088933 is a prime.

It is a Duffinian number.

1089445 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (98928).

2^1089445 is an apocalyptic number.

It is an amenable number.

1089445 is a deficient number, since it is larger than the sum of its proper divisors (493403).

1089445 is a wasteful number, since it uses less digits than its factorization.

1089445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1089445 is about 1043.7648202541. The cubic root of 1089445 is about 102.8967765948.

The spelling of 1089445 in words is "one million, eighty-nine thousand, four hundred forty-five".