229172493 has 32 divisors (see below), whose sum is σ = 344881152. Its totient is φ = 134153600.

The previous prime is 229172473. The next prime is 229172501. The reversal of 229172493 is 394271922.

229172493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 229172493 - 2⁹ = 229171981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229172473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143980 + ... + 145562.

It is an arithmetic number, because the mean of its divisors is an integer number (10777536).

Almost surely, 2^229172493 is an apocalyptic number.

It is an amenable number.

229172493 is a deficient number, since it is larger than the sum of its proper divisors (115708659).

229172493 is a wasteful number, since it uses less digits than its factorization.

229172493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745.

The product of its digits is 54432, while the sum is 39.

The square root of 229172493 is about 15138.4442067208. Note that the first 3 decimals coincide. The cubic root of 229172493 is about 611.9568912136.

The spelling of 229172493 in words is "two hundred twenty-nine million, one hundred seventy-two thousand, four hundred ninety-three".