228713839779 has 4 divisors (see below), whose sum is σ = 304951786376. Its totient is φ = 152475893184.

The previous prime is 228713839703. The next prime is 228713839787. The reversal of 228713839779 is 977938317822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 228713839779 - 2¹¹ = 228713837731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228713839279) 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, 38118973294 + ... + 38118973299.

It is an arithmetic number, because the mean of its divisors is an integer number (76237946594).

Almost surely, 2^228713839779 is an apocalyptic number.

228713839779 is a deficient number, since it is larger than the sum of its proper divisors (76237946597).

228713839779 is an equidigital number, since it uses as much as digits as its factorization.

228713839779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76237946596.

The product of its digits is 64012032, while the sum is 66.

The spelling of 228713839779 in words is "two hundred twenty-eight billion, seven hundred thirteen million, eight hundred thirty-nine thousand, seven hundred seventy-nine".