344445005 has 8 divisors (see below), whose sum is σ = 414291192. Its totient is φ = 274917888.

The previous prime is 344445001. The next prime is 344445011. The reversal of 344445005 is 500544443.

It can be written as a sum of positive squares in 4 ways, for example, as 18028516 + 326416489 = 4246^2 + 18067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 344445005 - 2² = 344445001 is a prime.

It is a super-2 number, since 2×344445005² = 237284722938900050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344445001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77384 + ... + 81713.

It is an arithmetic number, because the mean of its divisors is an integer number (51786399).

Almost surely, 2^344445005 is an apocalyptic number.

It is an amenable number.

344445005 is a deficient number, since it is larger than the sum of its proper divisors (69846187).

344445005 is a wasteful number, since it uses less digits than its factorization.

344445005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159535.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 344445005 is about 18559.2296445731. The cubic root of 344445005 is about 700.9816194171.

Adding to 344445005 its reverse (500544443), we get a palindrome (844989448).

The spelling of 344445005 in words is "three hundred forty-four million, four hundred forty-five thousand, five".