13143917 has 8 divisors (see below), whose sum is σ = 13602936. Its totient is φ = 12690432.

The previous prime is 13143901. The next prime is 13143937. The reversal of 13143917 is 71934131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5669161 + 7474756 = 2381^2 + 2734^2 .

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 13143917 - 2⁴ = 13143901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13143917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143937) 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, 3773 + ... + 6365.

It is an arithmetic number, because the mean of its divisors is an integer number (1700367).

Almost surely, 2^13143917 is an apocalyptic number.

It is an amenable number.

13143917 is a deficient number, since it is larger than the sum of its proper divisors (459019).

13143917 is a wasteful number, since it uses less digits than its factorization.

13143917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767.

The product of its digits is 2268, while the sum is 29.

The square root of 13143917 is about 3625.4540405306. The cubic root of 13143917 is about 235.9979711115.

The spelling of 13143917 in words is "thirteen million, one hundred forty-three thousand, nine hundred seventeen".