11291789 has 2 divisors, whose sum is σ = 11291790. Its totient is φ = 11291788.

The previous prime is 11291779. The next prime is 11291801. The reversal of 11291789 is 98719211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11276164 + 15625 = 3358^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 11291789 - 2⁴ = 11291773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11291779) by changing a digit.

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 as a sum of consecutive naturals, namely, 5645894 + 5645895.

It is an arithmetic number, because the mean of its divisors is an integer number (5645895).

Almost surely, 2^11291789 is an apocalyptic number.

It is an amenable number.

11291789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11291789 is an equidigital number, since it uses as much as digits as its factorization.

11291789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 38.

The square root of 11291789 is about 3360.3257282591. The cubic root of 11291789 is about 224.3473366163.

The spelling of 11291789 in words is "eleven million, two hundred ninety-one thousand, seven hundred eighty-nine".