13917005 has 8 divisors (see below), whose sum is σ = 17015832. Its totient is φ = 10923328.

The previous prime is 13916989. The next prime is 13917023. The reversal of 13917005 is 50071931.

It can be written as a sum of positive squares in 4 ways, for example, as 2172676 + 11744329 = 1474^2 + 3427^2 .

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 13917005 - 2⁴ = 13916989 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 25994 + ... + 26523.

It is an arithmetic number, because the mean of its divisors is an integer number (2126979).

Almost surely, 2^13917005 is an apocalyptic number.

It is an amenable number.

13917005 is a deficient number, since it is larger than the sum of its proper divisors (3098827).

13917005 is an equidigital number, since it uses as much as digits as its factorization.

13917005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52575.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 13917005 is about 3730.5502275134. The cubic root of 13917005 is about 240.5370208526.

Adding to 13917005 its reverse (50071931), we get a palindrome (63988936).

The spelling of 13917005 in words is "thirteen million, nine hundred seventeen thousand, five".