229139011 has 4 divisors (see below), whose sum is σ = 236530624. Its totient is φ = 221747400.

The previous prime is 229138999. The next prime is 229139017. The reversal of 229139011 is 110931922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110931922 = 2 ⋅55465961.

It is a cyclic number.

It is not a de Polignac number, because 229139011 - 2⁷ = 229138883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229139017) 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, 3695760 + ... + 3695821.

It is an arithmetic number, because the mean of its divisors is an integer number (59132656).

Almost surely, 2^229139011 is an apocalyptic number.

229139011 is a deficient number, since it is larger than the sum of its proper divisors (7391613).

229139011 is an equidigital number, since it uses as much as digits as its factorization.

229139011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391612.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 229139011 is about 15137.3383063206. The cubic root of 229139011 is about 611.9270875516.

The spelling of 229139011 in words is "two hundred twenty-nine million, one hundred thirty-nine thousand, eleven".