1089440451 has 24 divisors (see below), whose sum is σ = 1719132480. Its totient is φ = 659329200.

The previous prime is 1089440447. The next prime is 1089440453. The reversal of 1089440451 is 1540449801.

It is not a de Polignac number, because 1089440451 - 2² = 1089440447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1089440453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65716 + ... + 80606.

It is an arithmetic number, because the mean of its divisors is an integer number (71630520).

Almost surely, 2^1089440451 is an apocalyptic number.

1089440451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1089440451 is a deficient number, since it is larger than the sum of its proper divisors (629692029).

1089440451 is a wasteful number, since it uses less digits than its factorization.

1089440451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15647 (or 15644 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1089440451 is about 33006.6728253546. The cubic root of 1089440451 is about 1028.9663337873.

The spelling of 1089440451 in words is "one billion, eighty-nine million, four hundred forty thousand, four hundred fifty-one".