1089335040 has 144 divisors (see below), whose sum is σ = 3591684096. Its totient is φ = 281088000.

The previous prime is 1089335003. The next prime is 1089335041. The reversal of 1089335040 is 405339801.

It is a junction number, because it is equal to n+sod(n) for n = 1089334992 and 1089335010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089335041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114465 + ... + 123615.

Almost surely, 2^1089335040 is an apocalyptic number.

1089335040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089335040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1795842048).

1089335040 is an abundant number, since it is smaller than the sum of its proper divisors (2502349056).

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

1089335040 is an equidigital number, since it uses as much as digits as its factorization.

1089335040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206 (or 9192 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1089335040 is about 33005.0759732499. The cubic root of 1089335040 is about 1028.9331461485.

The spelling of 1089335040 in words is "one billion, eighty-nine million, three hundred thirty-five thousand, forty".