1089835 has 16 divisors (see below), whose sum is σ = 1384416. Its totient is φ = 822528.

The previous prime is 1089799. The next prime is 1089841. The reversal of 1089835 is 5389801.

1089835 = T₂ + T₃ + ... + T₁₈₆.

It is a cyclic number.

It is not a de Polignac number, because 1089835 - 2¹¹ = 1087787 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 1089835.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7887 + ... + 8023.

It is an arithmetic number, because the mean of its divisors is an integer number (86526).

2^1089835 is an apocalyptic number.

1089835 is a deficient number, since it is larger than the sum of its proper divisors (294581).

1089835 is a wasteful number, since it uses less digits than its factorization.

1089835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1089835 is about 1043.9516272318. The cubic root of 1089835 is about 102.9090534744.

Subtracting from 1089835 its sum of digits (34), we obtain a palindrome (1089801).

The spelling of 1089835 in words is "one million, eighty-nine thousand, eight hundred thirty-five".