36221789 has 2 divisors, whose sum is σ = 36221790. Its totient is φ = 36221788.

The previous prime is 36221777. The next prime is 36221791. The reversal of 36221789 is 98712263.

36221789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19272100 + 16949689 = 4390^2 + 4117^2 .

It is a cyclic number.

It is not a de Polignac number, because 36221789 - 2¹² = 36217693 is a prime.

Together with 36221791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36221719) by changing a digit.

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 as a sum of consecutive naturals, namely, 18110894 + 18110895.

It is an arithmetic number, because the mean of its divisors is an integer number (18110895).

Almost surely, 2^36221789 is an apocalyptic number.

It is an amenable number.

36221789 is a deficient number, since it is larger than the sum of its proper divisors (1).

36221789 is an equidigital number, since it uses as much as digits as its factorization.

36221789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 36221789 is about 6018.4540373754. The cubic root of 36221789 is about 330.8694215120.

The spelling of 36221789 in words is "thirty-six million, two hundred twenty-one thousand, seven hundred eighty-nine".