229142861 has 4 divisors (see below), whose sum is σ = 229354752. Its totient is φ = 228930972.

The previous prime is 229142857. The next prime is 229142863. The reversal of 229142861 is 168241922.

229142861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 229142861 - 2² = 229142857 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 (229142863) 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, 104315 + ... + 106488.

It is an arithmetic number, because the mean of its divisors is an integer number (57338688).

Almost surely, 2^229142861 is an apocalyptic number.

It is an amenable number.

229142861 is a deficient number, since it is larger than the sum of its proper divisors (211891).

229142861 is a wasteful number, since it uses less digits than its factorization.

229142861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211890.

The product of its digits is 13824, while the sum is 35.

The square root of 229142861 is about 15137.4654747748. The cubic root of 229142861 is about 611.9305147377.

The spelling of 229142861 in words is "two hundred twenty-nine million, one hundred forty-two thousand, eight hundred sixty-one".