1089456939 has 16 divisors (see below), whose sum is σ = 1684185600. Its totient is φ = 694725768.

The previous prime is 1089456937. The next prime is 1089456959. The reversal of 1089456939 is 9396549801.

It is not a de Polignac number, because 1089456939 - 2¹ = 1089456937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1089456931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876559 + ... + 877800.

It is an arithmetic number, because the mean of its divisors is an integer number (105261600).

Almost surely, 2^1089456939 is an apocalyptic number.

1089456939 is a deficient number, since it is larger than the sum of its proper divisors (594728661).

1089456939 is a wasteful number, since it uses less digits than its factorization.

1089456939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754391 (or 1754385 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 1089456939 is about 33006.9225920866. The cubic root of 1089456939 is about 1028.9715246818.

The spelling of 1089456939 in words is "one billion, eighty-nine million, four hundred fifty-six thousand, nine hundred thirty-nine".