229906186 has 4 divisors (see below), whose sum is σ = 344859282. Its totient is φ = 114953092.

The previous prime is 229906163. The next prime is 229906207. The reversal of 229906186 is 681609922.

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

It can be written as a sum of positive squares in only one way, i.e., 146531025 + 83375161 = 12105^2 + 9131^2 .

It is a super-2 number, since 2×229906186² = 105713708722133192, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57476545 + ... + 57476548.

Almost surely, 2^229906186 is an apocalyptic number.

229906186 is a deficient number, since it is larger than the sum of its proper divisors (114953096).

229906186 is a wasteful number, since it uses less digits than its factorization.

229906186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114953095.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 229906186 is about 15162.6576166581. The cubic root of 229906186 is about 612.6092530920.

The spelling of 229906186 in words is "two hundred twenty-nine million, nine hundred six thousand, one hundred eighty-six".