229539961 has 6 divisors (see below), whose sum is σ = 267015930. Its totient is φ = 196748496.

The previous prime is 229539941. The next prime is 229539983. The reversal of 229539961 is 169935922.

229539961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 214446736 + 15093225 = 14644^2 + 3885^2 .

It is not a de Polignac number, because 229539961 - 2⁷ = 229539833 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229539911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2342196 + ... + 2342293.

It is an arithmetic number, because the mean of its divisors is an integer number (44502655).

Almost surely, 2^229539961 is an apocalyptic number.

It is an amenable number.

229539961 is a deficient number, since it is larger than the sum of its proper divisors (37475969).

229539961 is an equidigital number, since it uses as much as digits as its factorization.

229539961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684503 (or 4684496 counting only the distinct ones).

The product of its digits is 262440, while the sum is 46.

The square root of 229539961 is about 15150.5762596675. The cubic root of 229539961 is about 612.2837985237.

The spelling of 229539961 in words is "two hundred twenty-nine million, five hundred thirty-nine thousand, nine hundred sixty-one".