229817963 has 2 divisors, whose sum is σ = 229817964. Its totient is φ = 229817962.

The previous prime is 229817947. The next prime is 229817993. The reversal of 229817963 is 369718922.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229817963 - 2⁴ = 229817947 is a prime.

It is a super-2 number, since 2×229817963² = 105632592234938738, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (229817933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114908981 + 114908982.

It is an arithmetic number, because the mean of its divisors is an integer number (114908982).

Almost surely, 2^229817963 is an apocalyptic number.

229817963 is a deficient number, since it is larger than the sum of its proper divisors (1).

229817963 is an equidigital number, since it uses as much as digits as its factorization.

229817963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 229817963 is about 15159.7481179603. The cubic root of 229817963 is about 612.5308832408.

The spelling of 229817963 in words is "two hundred twenty-nine million, eight hundred seventeen thousand, nine hundred sixty-three".