229477709 has 2 divisors, whose sum is σ = 229477710. Its totient is φ = 229477708.

The previous prime is 229477691. The next prime is 229477711. The reversal of 229477709 is 907774922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208802500 + 20675209 = 14450^2 + 4547^2 .

It is a cyclic number.

It is not a de Polignac number, because 229477709 - 2¹² = 229473613 is a prime.

Together with 229477711, 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 (229477769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114738854 + 114738855.

It is an arithmetic number, because the mean of its divisors is an integer number (114738855).

Almost surely, 2^229477709 is an apocalyptic number.

It is an amenable number.

229477709 is a deficient number, since it is larger than the sum of its proper divisors (1).

229477709 is an equidigital number, since it uses as much as digits as its factorization.

229477709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 229477709 is about 15148.5216770482. The cubic root of 229477709 is about 612.2284423857.

The spelling of 229477709 in words is "two hundred twenty-nine million, four hundred seventy-seven thousand, seven hundred nine".