1090489217 has 2 divisors, whose sum is σ = 1090489218. Its totient is φ = 1090489216.

The previous prime is 1090489207. The next prime is 1090489241. The reversal of 1090489217 is 7129840901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 907455376 + 183033841 = 30124^2 + 13529^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090489217 - 2⁸ = 1090488961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1090489207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545244608 + 545244609.

It is an arithmetic number, because the mean of its divisors is an integer number (545244609).

Almost surely, 2^1090489217 is an apocalyptic number.

It is an amenable number.

1090489217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090489217 is an equidigital number, since it uses as much as digits as its factorization.

1090489217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1090489217 is about 33022.5561851290. The cubic root of 1090489217 is about 1029.2964111236.

The spelling of 1090489217 in words is "one billion, ninety million, four hundred eighty-nine thousand, two hundred seventeen".