13988173 has 2 divisors, whose sum is σ = 13988174. Its totient is φ = 13988172.

The previous prime is 13988167. The next prime is 13988189. The reversal of 13988173 is 37188931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9653449 + 4334724 = 3107^2 + 2082^2 .

It is a cyclic number.

It is not a de Polignac number, because 13988173 - 2⁵ = 13988141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13982173) 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, 6994086 + 6994087.

It is an arithmetic number, because the mean of its divisors is an integer number (6994087).

Almost surely, 2^13988173 is an apocalyptic number.

It is an amenable number.

13988173 is a deficient number, since it is larger than the sum of its proper divisors (1).

13988173 is an equidigital number, since it uses as much as digits as its factorization.

13988173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 13988173 is about 3740.0766034936. The cubic root of 13988173 is about 240.9463388386.

It can be divided in two parts, 13988 and 173, that added together give a square (14161 = 119²).

The spelling of 13988173 in words is "thirteen million, nine hundred eighty-eight thousand, one hundred seventy-three".