226319389 has 2 divisors, whose sum is σ = 226319390. Its totient is φ = 226319388.

The previous prime is 226319347. The next prime is 226319407. The reversal of 226319389 is 983913622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222516889 + 3802500 = 14917^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 226319389 - 2²¹ = 224222237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226319309) 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, 113159694 + 113159695.

It is an arithmetic number, because the mean of its divisors is an integer number (113159695).

Almost surely, 2^226319389 is an apocalyptic number.

It is an amenable number.

226319389 is a deficient number, since it is larger than the sum of its proper divisors (1).

226319389 is an equidigital number, since it uses as much as digits as its factorization.

226319389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 226319389 is about 15043.9153480735. The cubic root of 226319389 is about 609.4067411352.

The spelling of 226319389 in words is "two hundred twenty-six million, three hundred nineteen thousand, three hundred eighty-nine".