4340139905249 has 2 divisors, whose sum is σ = 4340139905250. Its totient is φ = 4340139905248.

The previous prime is 4340139905209. The next prime is 4340139905261. The reversal of 4340139905249 is 9425099310434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4215601495249 + 124538410000 = 2053193^2 + 352900^2 .

It is a cyclic number.

It is not a de Polignac number, because 4340139905249 - 2²⁸ = 4339871469793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4340139905249.

It is not a weakly prime, because it can be changed into another prime (4340139905209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2170069952624 + 2170069952625.

It is an arithmetic number, because the mean of its divisors is an integer number (2170069952625).

Almost surely, 2^{4340139905249} is an apocalyptic number.

It is an amenable number.

4340139905249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4340139905249 is an equidigital number, since it uses as much as digits as its factorization.

4340139905249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 4340139905249 in words is "four trillion, three hundred forty billion, one hundred thirty-nine million, nine hundred five thousand, two hundred forty-nine".