229902971 has 2 divisors, whose sum is σ = 229902972. Its totient is φ = 229902970.

The previous prime is 229902889. The next prime is 229902973. The reversal of 229902971 is 179209922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229902971 is a prime.

Together with 229902973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229902973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114951485 + 114951486.

It is an arithmetic number, because the mean of its divisors is an integer number (114951486).

Almost surely, 2^229902971 is an apocalyptic number.

229902971 is a deficient number, since it is larger than the sum of its proper divisors (1).

229902971 is an equidigital number, since it uses as much as digits as its factorization.

229902971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 229902971 is about 15162.5515992527. The cubic root of 229902971 is about 612.6063975099.

The spelling of 229902971 in words is "two hundred twenty-nine million, nine hundred two thousand, nine hundred seventy-one".