229930591 has 4 divisors (see below), whose sum is σ = 250833384. Its totient is φ = 209027800.

The previous prime is 229930577. The next prime is 229930601. The reversal of 229930591 is 195039922.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229930591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229930511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10451380 + ... + 10451401.

It is an arithmetic number, because the mean of its divisors is an integer number (62708346).

Almost surely, 2^229930591 is an apocalyptic number.

229930591 is a deficient number, since it is larger than the sum of its proper divisors (20902793).

229930591 is a wasteful number, since it uses less digits than its factorization.

229930591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20902792.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 229930591 is about 15163.4623684698. The cubic root of 229930591 is about 612.6309288895.

The spelling of 229930591 in words is "two hundred twenty-nine million, nine hundred thirty thousand, five hundred ninety-one".