229773865 has 4 divisors (see below), whose sum is σ = 275728644. Its totient is φ = 183819088.

The previous prime is 229773857. The next prime is 229773877. The reversal of 229773865 is 568377922.

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 159163456 + 70610409 = 12616^2 + 8403^2 .

It is a cyclic number.

It is not a de Polignac number, because 229773865 - 2³ = 229773857 is a prime.

It is a super-3 number, since 3×229773865³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22977382 + ... + 22977391.

It is an arithmetic number, because the mean of its divisors is an integer number (68932161).

Almost surely, 2^229773865 is an apocalyptic number.

It is an amenable number.

229773865 is a deficient number, since it is larger than the sum of its proper divisors (45954779).

229773865 is an equidigital number, since it uses as much as digits as its factorization.

229773865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45954778.

The product of its digits is 1270080, while the sum is 49.

The square root of 229773865 is about 15158.2936044926. The cubic root of 229773865 is about 612.4917027892.

The spelling of 229773865 in words is "two hundred twenty-nine million, seven hundred seventy-three thousand, eight hundred sixty-five".