227978869 has 4 divisors (see below), whose sum is σ = 228030220. Its totient is φ = 227927520.

The previous prime is 227978833. The next prime is 227978879. The reversal of 227978869 is 968879722.

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 148108900 + 79869969 = 12170^2 + 8937^2 .

It is a cyclic number.

It is not a de Polignac number, because 227978869 - 2²⁵ = 194424437 is a prime.

It is a super-2 number, since 2×227978869² = 103948729421038322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227978879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18312 + ... + 28129.

It is an arithmetic number, because the mean of its divisors is an integer number (57007555).

Almost surely, 2^227978869 is an apocalyptic number.

It is an amenable number.

227978869 is a deficient number, since it is larger than the sum of its proper divisors (51351).

227978869 is an equidigital number, since it uses as much as digits as its factorization.

227978869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51350.

The product of its digits is 6096384, while the sum is 58.

The square root of 227978869 is about 15098.9691369974. The cubic root of 227978869 is about 610.8926007898.

The spelling of 227978869 in words is "two hundred twenty-seven million, nine hundred seventy-eight thousand, eight hundred sixty-nine".