228646979 has 16 divisors (see below), whose sum is σ = 268683264. Its totient is φ = 192403200.

The previous prime is 228646973. The next prime is 228646981. The reversal of 228646979 is 979646822.

It is not a de Polignac number, because 228646979 - 2¹⁶ = 228581443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228646979.

It is not an unprimeable number, because it can be changed into a prime (228646973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6734 + ... + 22419.

It is an arithmetic number, because the mean of its divisors is an integer number (16792704).

Almost surely, 2^228646979 is an apocalyptic number.

228646979 is a deficient number, since it is larger than the sum of its proper divisors (40036285).

228646979 is a wasteful number, since it uses less digits than its factorization.

228646979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29218.

The product of its digits is 2612736, while the sum is 53.

The square root of 228646979 is about 15121.0773095041. The cubic root of 228646979 is about 611.4887750556.

The spelling of 228646979 in words is "two hundred twenty-eight million, six hundred forty-six thousand, nine hundred seventy-nine".