344457889 has 2 divisors, whose sum is σ = 344457890. Its totient is φ = 344457888.

The previous prime is 344457887. The next prime is 344457899. The reversal of 344457889 is 988754443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213744400 + 130713489 = 14620^2 + 11433^2 .

It is a cyclic number.

It is not a de Polignac number, because 344457889 - 2¹ = 344457887 is a prime.

Together with 344457887, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (344457881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172228944 + 172228945.

It is an arithmetic number, because the mean of its divisors is an integer number (172228945).

Almost surely, 2^344457889 is an apocalyptic number.

It is an amenable number.

344457889 is a deficient number, since it is larger than the sum of its proper divisors (1).

344457889 is an equidigital number, since it uses as much as digits as its factorization.

344457889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 52.

The square root of 344457889 is about 18559.5767462515. The cubic root of 344457889 is about 700.9903594041.

The spelling of 344457889 in words is "three hundred forty-four million, four hundred fifty-seven thousand, eight hundred eighty-nine".