1089988 has 12 divisors (see below), whose sum is σ = 1916460. Its totient is φ = 542432.

The previous prime is 1089967. The next prime is 1090003. The reversal of 1089988 is 8899801.

It can be written as a sum of positive squares in 2 ways, for example, as 24964 + 1065024 = 158^2 + 1032^2 .

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 3 ways as a sum of consecutive naturals, for example, 570 + ... + 1582.

It is an arithmetic number, because the mean of its divisors is an integer number (159705).

2^1089988 is an apocalyptic number.

It is an amenable number.

1089988 is a deficient number, since it is larger than the sum of its proper divisors (826472).

1089988 is a wasteful number, since it uses less digits than its factorization.

1089988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1089988 is about 1044.0249039175. The cubic root of 1089988 is about 102.9138689888.

It can be divided in two parts, 10 and 89988, that added together give a palindrome (89998).

The spelling of 1089988 in words is "one million, eighty-nine thousand, nine hundred eighty-eight".