226664989 has 2 divisors, whose sum is σ = 226664990. Its totient is φ = 226664988.

The previous prime is 226664981. The next prime is 226665031. The reversal of 226664989 is 989466622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226261764 + 403225 = 15042^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 226664989 - 2³ = 226664981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226664981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113332494 + 113332495.

It is an arithmetic number, because the mean of its divisors is an integer number (113332495).

Almost surely, 2^226664989 is an apocalyptic number.

It is an amenable number.

226664989 is a deficient number, since it is larger than the sum of its proper divisors (1).

226664989 is an equidigital number, since it uses as much as digits as its factorization.

226664989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 52.

The square root of 226664989 is about 15055.3973378320. The cubic root of 226664989 is about 609.7167806437.

The spelling of 226664989 in words is "two hundred twenty-six million, six hundred sixty-four thousand, nine hundred eighty-nine".