1089040420 has 24 divisors (see below), whose sum is σ = 2462907384. Its totient is φ = 402107136.

The previous prime is 1089040361. The next prime is 1089040457. The reversal of 1089040420 is 240409801.

It can be written as a sum of positive squares in 4 ways, for example, as 8340544 + 1080699876 = 2888^2 + 32874^2 .

It is an unprimeable number.

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, 2094049 + ... + 2094568.

It is an arithmetic number, because the mean of its divisors is an integer number (102621141).

Almost surely, 2^1089040420 is an apocalyptic number.

1089040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089040420 is an abundant number, since it is smaller than the sum of its proper divisors (1373866964).

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

1089040420 is a wasteful number, since it uses less digits than its factorization.

1089040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188639 (or 4188637 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1089040420 is about 33000.6124185598. The cubic root of 1089040420 is about 1028.8403765212.

The spelling of 1089040420 in words is "one billion, eighty-nine million, forty thousand, four hundred twenty".