229291099 has 4 divisors (see below), whose sum is σ = 229630464. Its totient is φ = 228951736.

The previous prime is 229291063. The next prime is 229291123. The reversal of 229291099 is 990192922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990192922 = 2 ⋅495096461.

It is a cyclic number.

It is not a de Polignac number, because 229291099 - 2¹⁷ = 229160027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229291039) 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, 168667 + ... + 170020.

It is an arithmetic number, because the mean of its divisors is an integer number (57407616).

Almost surely, 2^229291099 is an apocalyptic number.

229291099 is a deficient number, since it is larger than the sum of its proper divisors (339365).

229291099 is an equidigital number, since it uses as much as digits as its factorization.

229291099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339364.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 229291099 is about 15142.3610774542. The cubic root of 229291099 is about 612.0624437901.

The spelling of 229291099 in words is "two hundred twenty-nine million, two hundred ninety-one thousand, ninety-nine".