1344405305 has 8 divisors (see below), whose sum is σ = 1708185672. Its totient is φ = 1012258048.

The previous prime is 1344405299. The next prime is 1344405341. The reversal of 1344405305 is 5035044431.

It can be written as a sum of positive squares in 4 ways, for example, as 774341929 + 570063376 = 27827^2 + 23876^2 .

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 1344405305 - 2¹² = 1344401209 is a prime.

It is a super-2 number, since 2×1344405305² = 3614851248224286050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7908182 + ... + 7908351.

It is an arithmetic number, because the mean of its divisors is an integer number (213523209).

Almost surely, 2^1344405305 is an apocalyptic number.

It is an amenable number.

1344405305 is a deficient number, since it is larger than the sum of its proper divisors (363780367).

1344405305 is a wasteful number, since it uses less digits than its factorization.

1344405305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15816555.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1344405305 is about 36666.1329430852. The cubic root of 1344405305 is about 1103.6805925145.

Adding to 1344405305 its reverse (5035044431), we get a palindrome (6379449736).

The spelling of 1344405305 in words is "one billion, three hundred forty-four million, four hundred five thousand, three hundred five".