229657569 has 4 divisors (see below), whose sum is σ = 306210096. Its totient is φ = 153105044.

The previous prime is 229657567. The next prime is 229657577. The reversal of 229657569 is 965756922.

229657569 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 229657569 - 2¹ = 229657567 is a prime.

It is a super-2 number, since 2×229657569² = 105485197997979522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (229657567) 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, 38276259 + ... + 38276264.

It is an arithmetic number, because the mean of its divisors is an integer number (76552524).

Almost surely, 2^229657569 is an apocalyptic number.

It is an amenable number.

229657569 is a deficient number, since it is larger than the sum of its proper divisors (76552527).

229657569 is an equidigital number, since it uses as much as digits as its factorization.

229657569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76552526.

The product of its digits is 2041200, while the sum is 51.

The square root of 229657569 is about 15154.4570671469. The cubic root of 229657569 is about 612.3883513835.

The spelling of 229657569 in words is "two hundred twenty-nine million, six hundred fifty-seven thousand, five hundred sixty-nine".