226297397 has 2 divisors, whose sum is σ = 226297398. Its totient is φ = 226297396.

The previous prime is 226297369. The next prime is 226297399. The reversal of 226297397 is 793792622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129982801 + 96314596 = 11401^2 + 9814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226297397 is a prime.

Together with 226297399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226297399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113148698 + 113148699.

It is an arithmetic number, because the mean of its divisors is an integer number (113148699).

Almost surely, 2^226297397 is an apocalyptic number.

It is an amenable number.

226297397 is a deficient number, since it is larger than the sum of its proper divisors (1).

226297397 is an equidigital number, since it uses as much as digits as its factorization.

226297397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 47.

The square root of 226297397 is about 15043.1844035763. The cubic root of 226297397 is about 609.3870013223.

The spelling of 226297397 in words is "two hundred twenty-six million, two hundred ninety-seven thousand, three hundred ninety-seven".