1089745 has 8 divisors (see below), whose sum is σ = 1376640. Its totient is φ = 825840.

The previous prime is 1089713. The next prime is 1089757. The reversal of 1089745 is 5479801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1089745 - 2⁵ = 1089713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1089745.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5641 + ... + 5830.

It is an arithmetic number, because the mean of its divisors is an integer number (172080).

2^1089745 is an apocalyptic number.

It is an amenable number.

1089745 is a deficient number, since it is larger than the sum of its proper divisors (286895).

1089745 is a wasteful number, since it uses less digits than its factorization.

1089745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1089745 is about 1043.9085208963. The cubic root of 1089745 is about 102.9062206083.

The spelling of 1089745 in words is "one million, eighty-nine thousand, seven hundred forty-five".