229752909 has 32 divisors (see below), whose sum is σ = 363242880. Its totient is φ = 143020800.

The previous prime is 229752899. The next prime is 229752923. The reversal of 229752909 is 909257922.

It is a happy number.

It is not a de Polignac number, because 229752909 - 2²⁵ = 196198477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229752979) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 58219 + ... + 62039.

It is an arithmetic number, because the mean of its divisors is an integer number (11351340).

Almost surely, 2^229752909 is an apocalyptic number.

It is an amenable number.

229752909 is a deficient number, since it is larger than the sum of its proper divisors (133489971).

229752909 is a wasteful number, since it uses less digits than its factorization.

229752909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978 (or 3972 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 229752909 is about 15157.6023499761. The cubic root of 229752909 is about 612.4730819213.

The spelling of 229752909 in words is "two hundred twenty-nine million, seven hundred fifty-two thousand, nine hundred nine".