1089994976 has 24 divisors (see below), whose sum is σ = 2452489200. Its totient is φ = 467140608.

The previous prime is 1089994973. The next prime is 1089994987. The reversal of 1089994976 is 6794999801.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2432801 + ... + 2433248.

It is an arithmetic number, because the mean of its divisors is an integer number (102187050).

Almost surely, 2^1089994976 is an apocalyptic number.

1089994976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1089994976 is an abundant number, since it is smaller than the sum of its proper divisors (1362494224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089994976 is an equidigital number, since it uses as much as digits as its factorization.

1089994976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866066 (or 4866058 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 62.

The square root of 1089994976 is about 33015.0719520646. The cubic root of 1089994976 is about 1029.1408854034.

The spelling of 1089994976 in words is "one billion, eighty-nine million, nine hundred ninety-four thousand, nine hundred seventy-six".