227878789 has 2 divisors, whose sum is σ = 227878790. Its totient is φ = 227878788.

The previous prime is 227878787. The next prime is 227878817. The reversal of 227878789 is 987878722.

227878789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175562500 + 52316289 = 13250^2 + 7233^2 .

It is a cyclic number.

It is not a de Polignac number, because 227878789 - 2¹ = 227878787 is a prime.

It is a super-2 number, since 2×227878789² = 103857484952213042, which contains 22 as substring.

Together with 227878787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227878787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113939394 + 113939395.

It is an arithmetic number, because the mean of its divisors is an integer number (113939395).

Almost surely, 2^227878789 is an apocalyptic number.

It is an amenable number.

227878789 is a deficient number, since it is larger than the sum of its proper divisors (1).

227878789 is an equidigital number, since it uses as much as digits as its factorization.

227878789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 58.

The square root of 227878789 is about 15095.6546396637. The cubic root of 227878789 is about 610.8031961880.

The spelling of 227878789 in words is "two hundred twenty-seven million, eight hundred seventy-eight thousand, seven hundred eighty-nine".