344404429 has 2 divisors, whose sum is σ = 344404430. Its totient is φ = 344404428.

The previous prime is 344404427. The next prime is 344404439. The reversal of 344404429 is 924404443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216148804 + 128255625 = 14702^2 + 11325^2 .

It is a cyclic number.

It is not a de Polignac number, because 344404429 - 2¹ = 344404427 is a prime.

It is a super-2 number, since 2×344404429² = 237228821429632082, which contains 22 as substring.

Together with 344404427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 344404394 and 344404403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344404427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172202214 + 172202215.

It is an arithmetic number, because the mean of its divisors is an integer number (172202215).

Almost surely, 2^344404429 is an apocalyptic number.

It is an amenable number.

344404429 is a deficient number, since it is larger than the sum of its proper divisors (1).

344404429 is an equidigital number, since it uses as much as digits as its factorization.

344404429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 344404429 is about 18558.1364635569. The cubic root of 344404429 is about 700.9540928679.

The spelling of 344404429 in words is "three hundred forty-four million, four hundred four thousand, four hundred twenty-nine".