13478117 has 2 divisors, whose sum is σ = 13478118. Its totient is φ = 13478116.

The previous prime is 13478089. The next prime is 13478119. The reversal of 13478117 is 71187431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10962721 + 2515396 = 3311^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 13478117 - 2²⁰ = 12429541 is a prime.

Together with 13478119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13478119) 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 as a sum of consecutive naturals, namely, 6739058 + 6739059.

It is an arithmetic number, because the mean of its divisors is an integer number (6739059).

Almost surely, 2^13478117 is an apocalyptic number.

It is an amenable number.

13478117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13478117 is an equidigital number, since it uses as much as digits as its factorization.

13478117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 32.

The square root of 13478117 is about 3671.2555073163. The cubic root of 13478117 is about 237.9814323014.

The spelling of 13478117 in words is "thirteen million, four hundred seventy-eight thousand, one hundred seventeen".