1089446420 has 12 divisors (see below), whose sum is σ = 2287837524. Its totient is φ = 435778560.

The previous prime is 1089446399. The next prime is 1089446431. The reversal of 1089446420 is 246449801.

It can be written as a sum of positive squares in 2 ways, for example, as 860952964 + 228493456 = 29342^2 + 15116^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27236141 + ... + 27236180.

It is an arithmetic number, because the mean of its divisors is an integer number (190653127).

Almost surely, 2^1089446420 is an apocalyptic number.

1089446420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089446420 is an abundant number, since it is smaller than the sum of its proper divisors (1198391104).

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

1089446420 is a wasteful number, since it uses less digits than its factorization.

1089446420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54472330 (or 54472328 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 1089446420 is about 33006.7632463409. The cubic root of 1089446420 is about 1028.9682130055.

The spelling of 1089446420 in words is "one billion, eighty-nine million, four hundred forty-six thousand, four hundred twenty".