344277389 has 2 divisors, whose sum is σ = 344277390. Its totient is φ = 344277388.

The previous prime is 344277379. The next prime is 344277391. The reversal of 344277389 is 983772443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298944100 + 45333289 = 17290^2 + 6733^2 .

It is a cyclic number.

It is not a de Polignac number, because 344277389 - 2²⁰ = 343228813 is a prime.

Together with 344277391, 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 (344277379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172138694 + 172138695.

It is an arithmetic number, because the mean of its divisors is an integer number (172138695).

Almost surely, 2^344277389 is an apocalyptic number.

It is an amenable number.

344277389 is a deficient number, since it is larger than the sum of its proper divisors (1).

344277389 is an equidigital number, since it uses as much as digits as its factorization.

344277389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 47.

The square root of 344277389 is about 18554.7133904030. The cubic root of 344277389 is about 700.8678956030.

The spelling of 344277389 in words is "three hundred forty-four million, two hundred seventy-seven thousand, three hundred eighty-nine".