229889897 has 2 divisors, whose sum is σ = 229889898. Its totient is φ = 229889896.

The previous prime is 229889887. The next prime is 229889909. The reversal of 229889897 is 798988922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210714256 + 19175641 = 14516^2 + 4379^2 .

It is a cyclic number.

It is not a de Polignac number, because 229889897 - 2¹⁰ = 229888873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229889857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114944948 + 114944949.

It is an arithmetic number, because the mean of its divisors is an integer number (114944949).

Almost surely, 2^229889897 is an apocalyptic number.

It is an amenable number.

229889897 is a deficient number, since it is larger than the sum of its proper divisors (1).

229889897 is an equidigital number, since it uses as much as digits as its factorization.

229889897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 62.

The square root of 229889897 is about 15162.1204651592. The cubic root of 229889897 is about 612.5947848314.

The spelling of 229889897 in words is "two hundred twenty-nine million, eight hundred eighty-nine thousand, eight hundred ninety-seven".