229439389 has 4 divisors (see below), whose sum is σ = 229480380. Its totient is φ = 229398400.

The previous prime is 229439363. The next prime is 229439407. The reversal of 229439389 is 983934922.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101002500 + 128436889 = 10050^2 + 11333^2 .

It is a cyclic number.

It is not a de Polignac number, because 229439389 - 2⁷ = 229439261 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 (229439689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10462 + ... + 23839.

It is an arithmetic number, because the mean of its divisors is an integer number (57370095).

Almost surely, 2^229439389 is an apocalyptic number.

It is an amenable number.

229439389 is a deficient number, since it is larger than the sum of its proper divisors (40991).

229439389 is an equidigital number, since it uses as much as digits as its factorization.

229439389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40990.

The product of its digits is 839808, while the sum is 49.

The square root of 229439389 is about 15147.2568143542. The cubic root of 229439389 is about 612.1943622420.

The spelling of 229439389 in words is "two hundred twenty-nine million, four hundred thirty-nine thousand, three hundred eighty-nine".