1092987889 has 32 divisors (see below), whose sum is σ = 1314745344. Its totient is φ = 889237440.

The previous prime is 1092987859. The next prime is 1092987941. The reversal of 1092987889 is 9887892901.

It is a de Polignac number, because none of the positive numbers 2^k-1092987889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1092987809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2089582 + ... + 2090104.

It is an arithmetic number, because the mean of its divisors is an integer number (41085792).

Almost surely, 2^1092987889 is an apocalyptic number.

It is an amenable number.

1092987889 is a deficient number, since it is larger than the sum of its proper divisors (221757455).

1092987889 is a wasteful number, since it uses less digits than its factorization.

1092987889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757.

The product of its (nonzero) digits is 5225472, while the sum is 61.

The square root of 1092987889 is about 33060.3673452066. The cubic root of 1092987889 is about 1030.0819644454.

The spelling of 1092987889 in words is "one billion, ninety-two million, nine hundred eighty-seven thousand, eight hundred eighty-nine".