229013861 has 4 divisors (see below), whose sum is σ = 229464300. Its totient is φ = 228563424.

The previous prime is 229013857. The next prime is 229013867. The reversal of 229013861 is 168310922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88472836 + 140541025 = 9406^2 + 11855^2 .

It is a cyclic number.

It is not a de Polignac number, because 229013861 - 2² = 229013857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229013867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224456 + ... + 225473.

It is an arithmetic number, because the mean of its divisors is an integer number (57366075).

Almost surely, 2^229013861 is an apocalyptic number.

It is an amenable number.

229013861 is a deficient number, since it is larger than the sum of its proper divisors (450439).

229013861 is an equidigital number, since it uses as much as digits as its factorization.

229013861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450438.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 229013861 is about 15133.2039238226. The cubic root of 229013861 is about 611.8156608367.

It can be divided in two parts, 22901 and 3861, that added together give a palindrome (26762).

The spelling of 229013861 in words is "two hundred twenty-nine million, thirteen thousand, eight hundred sixty-one".