226307989 has 2 divisors, whose sum is σ = 226307990. Its totient is φ = 226307988.

The previous prime is 226307929. The next prime is 226308001. The reversal of 226307989 is 989703622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226261764 + 46225 = 15042^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 226307989 - 2²⁵ = 192753557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226307929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113153994 + 113153995.

It is an arithmetic number, because the mean of its divisors is an integer number (113153995).

Almost surely, 2^226307989 is an apocalyptic number.

It is an amenable number.

226307989 is a deficient number, since it is larger than the sum of its proper divisors (1).

226307989 is an equidigital number, since it uses as much as digits as its factorization.

226307989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 226307989 is about 15043.5364525766. The cubic root of 226307989 is about 609.3965087617.

The spelling of 226307989 in words is "two hundred twenty-six million, three hundred seven thousand, nine hundred eighty-nine".