1089489841 has 4 divisors (see below), whose sum is σ = 1188534384. Its totient is φ = 990445300.

The previous prime is 1089489833. The next prime is 1089489853. The reversal of 1089489841 is 1489849801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1089489841 - 2³ = 1089489833 is a prime.

It is a super-2 number, since 2×1089489841² = 2373976227284410562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089489641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49522255 + ... + 49522276.

It is an arithmetic number, because the mean of its divisors is an integer number (297133596).

Almost surely, 2^1089489841 is an apocalyptic number.

1089489841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1089489841 is a deficient number, since it is larger than the sum of its proper divisors (99044543).

1089489841 is an equidigital number, since it uses as much as digits as its factorization.

1089489841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99044542.

The product of its (nonzero) digits is 663552, while the sum is 52.

The square root of 1089489841 is about 33007.4209989208. The cubic root of 1089489841 is about 1028.9818830170.

The spelling of 1089489841 in words is "one billion, eighty-nine million, four hundred eighty-nine thousand, eight hundred forty-one".