229477289 has 2 divisors, whose sum is σ = 229477290. Its totient is φ = 229477288.

The previous prime is 229477277. The next prime is 229477291. The reversal of 229477289 is 982774922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144192064 + 85285225 = 12008^2 + 9235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229477289 is a prime.

It is a super-3 number, since 3×229477289³ (a number of 26 digits) contains 333 as substring.

Together with 229477291, 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 (229477489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114738644 + 114738645.

It is an arithmetic number, because the mean of its divisors is an integer number (114738645).

Almost surely, 2^229477289 is an apocalyptic number.

It is an amenable number.

229477289 is a deficient number, since it is larger than the sum of its proper divisors (1).

229477289 is an equidigital number, since it uses as much as digits as its factorization.

229477289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 229477289 is about 15148.5078143030. The cubic root of 229477289 is about 612.2280688765.

The spelling of 229477289 in words is "two hundred twenty-nine million, four hundred seventy-seven thousand, two hundred eighty-nine".