13981017 has 16 divisors (see below), whose sum is σ = 19949120. Its totient is φ = 8683200.

The previous prime is 13981013. The next prime is 13981027. The reversal of 13981017 is 71018931.

It is not a de Polignac number, because 13981017 - 2² = 13981013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13981013) 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 15 ways as a sum of consecutive naturals, for example, 1467 + ... + 5487.

It is an arithmetic number, because the mean of its divisors is an integer number (1246820).

Almost surely, 2^13981017 is an apocalyptic number.

It is an amenable number.

13981017 is a deficient number, since it is larger than the sum of its proper divisors (5968103).

13981017 is a wasteful number, since it uses less digits than its factorization.

13981017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 13981017 is about 3739.1198162134. The cubic root of 13981017 is about 240.9052444535.

Adding to 13981017 its reverse (71018931), we get a palindrome (84999948).

It can be divided in two parts, 1398 and 1017, that added together give a triangular number (2415 = T₆₉).

The spelling of 13981017 in words is "thirteen million, nine hundred eighty-one thousand, seventeen".