344666429 has 2 divisors, whose sum is σ = 344666430. Its totient is φ = 344666428.

The previous prime is 344666419. The next prime is 344666453. The reversal of 344666429 is 924666443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334963204 + 9703225 = 18302^2 + 3115^2 .

It is an emirp because it is prime and its reverse (924666443) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344666429 is a prime.

It is a super-2 number, since 2×344666429² = 237589894559224082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 344666429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344666419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172333214 + 172333215.

It is an arithmetic number, because the mean of its divisors is an integer number (172333215).

Almost surely, 2^344666429 is an apocalyptic number.

It is an amenable number.

344666429 is a deficient number, since it is larger than the sum of its proper divisors (1).

344666429 is an equidigital number, since it uses as much as digits as its factorization.

344666429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 44.

The square root of 344666429 is about 18565.1940199934. The cubic root of 344666429 is about 701.1317942435.

The spelling of 344666429 in words is "three hundred forty-four million, six hundred sixty-six thousand, four hundred twenty-nine".