1089994975 has 6 divisors (see below), whose sum is σ = 1351593800. Its totient is φ = 871995960.

The previous prime is 1089994973. The next prime is 1089994987. The reversal of 1089994975 is 5794999801.

It is not a de Polignac number, because 1089994975 - 2¹ = 1089994973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089994973) 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 5 ways as a sum of consecutive naturals, for example, 21799875 + ... + 21799924.

Almost surely, 2^1089994975 is an apocalyptic number.

1089994975 is a deficient number, since it is larger than the sum of its proper divisors (261598825).

1089994975 is an equidigital number, since it uses as much as digits as its factorization.

1089994975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43599809 (or 43599804 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 61.

The square root of 1089994975 is about 33015.0719369200. The cubic root of 1089994975 is about 1029.1408850887.

The spelling of 1089994975 in words is "one billion, eighty-nine million, nine hundred ninety-four thousand, nine hundred seventy-five".