229878133 has 4 divisors (see below), whose sum is σ = 230891040. Its totient is φ = 228865228.

The previous prime is 229878083. The next prime is 229878137. The reversal of 229878133 is 331878922.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331878922 = 2 ⋅165939461.

It is a cyclic number.

It is not a de Polignac number, because 229878133 - 2²¹ = 227780981 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 229878133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229878137) 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, 506113 + ... + 506566.

It is an arithmetic number, because the mean of its divisors is an integer number (57722760).

Almost surely, 2^229878133 is an apocalyptic number.

It is an amenable number.

229878133 is a deficient number, since it is larger than the sum of its proper divisors (1012907).

229878133 is a wasteful number, since it uses less digits than its factorization.

229878133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012906.

The product of its digits is 145152, while the sum is 43.

The square root of 229878133 is about 15161.7325197353. The cubic root of 229878133 is about 612.5843353538.

The spelling of 229878133 in words is "two hundred twenty-nine million, eight hundred seventy-eight thousand, one hundred thirty-three".