243849029 has 2 divisors, whose sum is σ = 243849030. Its totient is φ = 243849028.

The previous prime is 243848999. The next prime is 243849031. The reversal of 243849029 is 920948342.

243849029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190164100 + 53684929 = 13790^2 + 7327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243849029 is a prime.

Together with 243849031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243849829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121924514 + 121924515.

It is an arithmetic number, because the mean of its divisors is an integer number (121924515).

Almost surely, 2^243849029 is an apocalyptic number.

It is an amenable number.

243849029 is a deficient number, since it is larger than the sum of its proper divisors (1).

243849029 is an equidigital number, since it uses as much as digits as its factorization.

243849029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 243849029 is about 15615.6661401299. Note that the first 3 decimals coincide. The cubic root of 243849029 is about 624.7510722825.

The spelling of 243849029 in words is "two hundred forty-three million, eight hundred forty-nine thousand, twenty-nine".