226469981 has 2 divisors, whose sum is σ = 226469982. Its totient is φ = 226469980.

The previous prime is 226469959. The next prime is 226469993. The reversal of 226469981 is 189964622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202606756 + 23863225 = 14234^2 + 4885^2 .

It is a cyclic number.

It is not a de Polignac number, because 226469981 - 2⁶ = 226469917 is a prime.

It is a super-2 number, since 2×226469981² = 102577304588280722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226462981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113234990 + 113234991.

It is an arithmetic number, because the mean of its divisors is an integer number (113234991).

Almost surely, 2^226469981 is an apocalyptic number.

It is an amenable number.

226469981 is a deficient number, since it is larger than the sum of its proper divisors (1).

226469981 is an equidigital number, since it uses as much as digits as its factorization.

226469981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 226469981 is about 15048.9195957717. The cubic root of 226469981 is about 609.5418767548.

The spelling of 226469981 in words is "two hundred twenty-six million, four hundred sixty-nine thousand, nine hundred eighty-one".