229251993 has 16 divisors (see below), whose sum is σ = 311428800. Its totient is φ = 149964800.

The previous prime is 229251991. The next prime is 229252003. The reversal of 229251993 is 399152922.

It is a cyclic number.

It is not a de Polignac number, because 229251993 - 2¹ = 229251991 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (229251991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142393 + ... + 143993.

It is an arithmetic number, because the mean of its divisors is an integer number (19464300).

Almost surely, 2^229251993 is an apocalyptic number.

It is an amenable number.

229251993 is a deficient number, since it is larger than the sum of its proper divisors (82176807).

229251993 is a wasteful number, since it uses less digits than its factorization.

229251993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

The product of its digits is 87480, while the sum is 42.

The square root of 229251993 is about 15141.0697442420. The cubic root of 229251993 is about 612.0276457032.

It can be divided in two parts, 2292 and 51993, that added together give a triangular number (54285 = T₃₂₉).

The spelling of 229251993 in words is "two hundred twenty-nine million, two hundred fifty-one thousand, nine hundred ninety-three".