13394905 has 24 divisors (see below), whose sum is σ = 17474184. Its totient is φ = 9849600.

The previous prime is 13394893. The next prime is 13394917. The reversal of 13394905 is 50949331.

It is an interprime number because it is at equal distance from previous prime (13394893) and next prime (13394917).

It can be written as a sum of positive squares in 4 ways, for example, as 1172889 + 12222016 = 1083^2 + 3496^2 .

It is not a de Polignac number, because 13394905 - 2⁵ = 13394873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 73915 + ... + 74095.

It is an arithmetic number, because the mean of its divisors is an integer number (728091).

Almost surely, 2^13394905 is an apocalyptic number.

It is an amenable number.

13394905 is a deficient number, since it is larger than the sum of its proper divisors (4079279).

13394905 is a wasteful number, since it uses less digits than its factorization.

13394905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 13394905 is about 3659.9050534133. The cubic root of 13394905 is about 237.4906662999.

The spelling of 13394905 in words is "thirteen million, three hundred ninety-four thousand, nine hundred five".