229911897 has 4 divisors (see below), whose sum is σ = 306549200. Its totient is φ = 153274596.

The previous prime is 229911833. The next prime is 229911901. The reversal of 229911897 is 798119922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 229911897 - 2⁶ = 229911833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229911817) 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, 38318647 + ... + 38318652.

It is an arithmetic number, because the mean of its divisors is an integer number (76637300).

Almost surely, 2^229911897 is an apocalyptic number.

It is an amenable number.

229911897 is a deficient number, since it is larger than the sum of its proper divisors (76637303).

229911897 is an equidigital number, since it uses as much as digits as its factorization.

229911897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76637302.

The product of its digits is 163296, while the sum is 48.

The square root of 229911897 is about 15162.8459399942. The cubic root of 229911897 is about 612.6143255704.

It can be divided in two parts, 2299 and 11897, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 229911897 in words is "two hundred twenty-nine million, nine hundred eleven thousand, eight hundred ninety-seven".