344456869 has 2 divisors, whose sum is σ = 344456870. Its totient is φ = 344456868.

The previous prime is 344456857. The next prime is 344456891. The reversal of 344456869 is 968654443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314885025 + 29571844 = 17745^2 + 5438^2 .

It is a cyclic number.

It is not a de Polignac number, because 344456869 - 2¹³ = 344448677 is a prime.

It is a super-2 number, since 2×344456869² = 237301069202566322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344456899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172228434 + 172228435.

It is an arithmetic number, because the mean of its divisors is an integer number (172228435).

Almost surely, 2^344456869 is an apocalyptic number.

It is an amenable number.

344456869 is a deficient number, since it is larger than the sum of its proper divisors (1).

344456869 is an equidigital number, since it uses as much as digits as its factorization.

344456869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 49.

The square root of 344456869 is about 18559.5492671562. The cubic root of 344456869 is about 700.9896674851.

It can be divided in two parts, 34445 and 6869, that added together give a palindrome (41314).

The spelling of 344456869 in words is "three hundred forty-four million, four hundred fifty-six thousand, eight hundred sixty-nine".