228979433 has 4 divisors (see below), whose sum is σ = 229207380. Its totient is φ = 228751488.

The previous prime is 228979427. The next prime is 228979463. The reversal of 228979433 is 334979822.

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 170119849 + 58859584 = 13043^2 + 7672^2 .

It is a cyclic number.

It is not a de Polignac number, because 228979433 - 2⁴ = 228979417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228979463) 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, 112460 + ... + 114477.

It is an arithmetic number, because the mean of its divisors is an integer number (57301845).

Almost surely, 2^228979433 is an apocalyptic number.

It is an amenable number.

228979433 is a deficient number, since it is larger than the sum of its proper divisors (227947).

228979433 is a wasteful number, since it uses less digits than its factorization.

228979433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227946.

The product of its digits is 653184, while the sum is 47.

The square root of 228979433 is about 15132.0663823551. The cubic root of 228979433 is about 611.7850009092.

The spelling of 228979433 in words is "two hundred twenty-eight million, nine hundred seventy-nine thousand, four hundred thirty-three".