1089419209 has 2 divisors, whose sum is σ = 1089419210. Its totient is φ = 1089419208.

The previous prime is 1089419197. The next prime is 1089419237. The reversal of 1089419209 is 9029149801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614048400 + 475370809 = 24780^2 + 21803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089419209 - 2⁹ = 1089418697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1089410209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544709604 + 544709605.

It is an arithmetic number, because the mean of its divisors is an integer number (544709605).

Almost surely, 2^1089419209 is an apocalyptic number.

It is an amenable number.

1089419209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089419209 is an equidigital number, since it uses as much as digits as its factorization.

1089419209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1089419209 is about 33006.3510403680. The cubic root of 1089419209 is about 1028.9596461203.

It can be divided in two parts, 10894 and 19209, that added together give a palindrome (30103).

The spelling of 1089419209 in words is "one billion, eighty-nine million, four hundred nineteen thousand, two hundred nine".