228447097 has 2 divisors, whose sum is σ = 228447098. Its totient is φ = 228447096.

The previous prime is 228447083. The next prime is 228447133. The reversal of 228447097 is 790744822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156350016 + 72097081 = 12504^2 + 8491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228447097 is a prime.

It is a super-2 number, since 2×228447097² = 104376152255454818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228447047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114223548 + 114223549.

It is an arithmetic number, because the mean of its divisors is an integer number (114223549).

Almost surely, 2^228447097 is an apocalyptic number.

It is an amenable number.

228447097 is a deficient number, since it is larger than the sum of its proper divisors (1).

228447097 is an equidigital number, since it uses as much as digits as its factorization.

228447097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 228447097 is about 15114.4664808256. The cubic root of 228447097 is about 611.3105363380.

The spelling of 228447097 in words is "two hundred twenty-eight million, four hundred forty-seven thousand, ninety-seven".