1089504775 has 12 divisors (see below), whose sum is σ = 1387500232. Its totient is φ = 848046240.

The previous prime is 1089504769. The next prime is 1089504817. The reversal of 1089504775 is 5774059801.

It is a happy number.

It is not a de Polignac number, because 1089504775 - 2⁵ = 1089504743 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 587997 + ... + 589846.

Almost surely, 2^1089504775 is an apocalyptic number.

1089504775 is a deficient number, since it is larger than the sum of its proper divisors (297995457).

1089504775 is a wasteful number, since it uses less digits than its factorization.

1089504775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177890 (or 1177885 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 1089504775 is about 33007.6472200004. The cubic root of 1089504775 is about 1028.9865845279.

The spelling of 1089504775 in words is "one billion, eighty-nine million, five hundred four thousand, seven hundred seventy-five".