226208789 has 2 divisors, whose sum is σ = 226208790. Its totient is φ = 226208788.

The previous prime is 226208779. The next prime is 226208809. The reversal of 226208789 is 987802622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149646289 + 76562500 = 12233^2 + 8750^2 .

It is a cyclic number.

It is not a de Polignac number, because 226208789 - 2⁸ = 226208533 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226208779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113104394 + 113104395.

It is an arithmetic number, because the mean of its divisors is an integer number (113104395).

Almost surely, 2^226208789 is an apocalyptic number.

It is an amenable number.

226208789 is a deficient number, since it is larger than the sum of its proper divisors (1).

226208789 is an equidigital number, since it uses as much as digits as its factorization.

226208789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 226208789 is about 15040.2389941118. The cubic root of 226208789 is about 609.3074546531.

The spelling of 226208789 in words is "two hundred twenty-six million, two hundred eight thousand, seven hundred eighty-nine".