229817961 has 6 divisors (see below), whose sum is σ = 331959290. Its totient is φ = 153211968.

The previous prime is 229817947. The next prime is 229817963. The reversal of 229817961 is 169718922.

It can be written as a sum of positive squares in only one way, i.e., 128936025 + 100881936 = 11355^2 + 10044^2 .

It is not a de Polignac number, because 229817961 - 2⁶ = 229817897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229817963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12767656 + ... + 12767673.

Almost surely, 2^229817961 is an apocalyptic number.

It is an amenable number.

229817961 is a deficient number, since it is larger than the sum of its proper divisors (102141329).

229817961 is a wasteful number, since it uses less digits than its factorization.

229817961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25535335 (or 25535332 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 229817961 is about 15159.7480519961. The cubic root of 229817961 is about 612.5308814639.

The spelling of 229817961 in words is "two hundred twenty-nine million, eight hundred seventeen thousand, nine hundred sixty-one".