1089994972 has 24 divisors (see below), whose sum is σ = 2093374080. Its totient is φ = 492482160.

The previous prime is 1089994931. The next prime is 1089994973. The reversal of 1089994972 is 2794999801.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66822 + ... + 81517.

It is an arithmetic number, because the mean of its divisors is an integer number (87223920).

Almost surely, 2^1089994972 is an apocalyptic number.

It is an amenable number.

1089994972 is a deficient number, since it is larger than the sum of its proper divisors (1003379108).

1089994972 is a wasteful number, since it uses less digits than its factorization.

1089994972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148521 (or 148519 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 58.

The square root of 1089994972 is about 33015.0718914862. The cubic root of 1089994972 is about 1029.1408841445.

The spelling of 1089994972 in words is "one billion, eighty-nine million, nine hundred ninety-four thousand, nine hundred seventy-two".