1089446399 has 2 divisors, whose sum is σ = 1089446400. Its totient is φ = 1089446398.

The previous prime is 1089446381. The next prime is 1089446431. The reversal of 1089446399 is 9936449801.

It is a weak prime.

It is an emirp because it is prime and its reverse (9936449801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1089446399 - 2⁸ = 1089446143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1089446399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089446999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544723199 + 544723200.

It is an arithmetic number, because the mean of its divisors is an integer number (544723200).

Almost surely, 2^1089446399 is an apocalyptic number.

1089446399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089446399 is an equidigital number, since it uses as much as digits as its factorization.

1089446399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The square root of 1089446399 is about 33006.7629282243. The cubic root of 1089446399 is about 1028.9682063941.

The spelling of 1089446399 in words is "one billion, eighty-nine million, four hundred forty-six thousand, three hundred ninety-nine".