226387729 has 4 divisors (see below), whose sum is σ = 229115376. Its totient is φ = 223660084.

The previous prime is 226387727. The next prime is 226387747. The reversal of 226387729 is 927783622.

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 226387729 - 2¹ = 226387727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226387723) 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, 1363699 + ... + 1363864.

It is an arithmetic number, because the mean of its divisors is an integer number (57278844).

Almost surely, 2^226387729 is an apocalyptic number.

It is an amenable number.

226387729 is a deficient number, since it is larger than the sum of its proper divisors (2727647).

226387729 is an equidigital number, since it uses as much as digits as its factorization.

226387729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727646.

The product of its digits is 508032, while the sum is 46.

The square root of 226387729 is about 15046.1865268247. The cubic root of 226387729 is about 609.4680743181.

The spelling of 226387729 in words is "two hundred twenty-six million, three hundred eighty-seven thousand, seven hundred twenty-nine".