226978789 has 4 divisors (see below), whose sum is σ = 236847456. Its totient is φ = 217110124.

The previous prime is 226978783. The next prime is 226978813. The reversal of 226978789 is 987879622.

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 a de Polignac number, because none of the positive numbers 2^k-226978789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226978783) 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, 4934299 + ... + 4934344.

It is an arithmetic number, because the mean of its divisors is an integer number (59211864).

Almost surely, 2^226978789 is an apocalyptic number.

It is an amenable number.

226978789 is a deficient number, since it is larger than the sum of its proper divisors (9868667).

226978789 is an equidigital number, since it uses as much as digits as its factorization.

226978789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868666.

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

The square root of 226978789 is about 15065.8152451170. The cubic root of 226978789 is about 609.9980193432.

The spelling of 226978789 in words is "two hundred twenty-six million, nine hundred seventy-eight thousand, seven hundred eighty-nine".