344513989 has 2 divisors, whose sum is σ = 344513990. Its totient is φ = 344513988.

The previous prime is 344513977. The next prime is 344514007. The reversal of 344513989 is 989315443.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179828100 + 164685889 = 13410^2 + 12833^2 .

It is an emirp because it is prime and its reverse (989315443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344513989 - 2¹¹ = 344511941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344543989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172256994 + 172256995.

It is an arithmetic number, because the mean of its divisors is an integer number (172256995).

Almost surely, 2^344513989 is an apocalyptic number.

It is an amenable number.

344513989 is a deficient number, since it is larger than the sum of its proper divisors (1).

344513989 is an equidigital number, since it uses as much as digits as its factorization.

344513989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 344513989 is about 18561.0880338411. The cubic root of 344513989 is about 701.0284128456.

The spelling of 344513989 in words is "three hundred forty-four million, five hundred thirteen thousand, nine hundred eighty-nine".