13981427 has 2 divisors, whose sum is σ = 13981428. Its totient is φ = 13981426.

The previous prime is 13981421. The next prime is 13981441. The reversal of 13981427 is 72418931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13981427 - 2¹⁰ = 13980403 is a prime.

It is not a weakly prime, because it can be changed into another prime (13981421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6990713 + 6990714.

It is an arithmetic number, because the mean of its divisors is an integer number (6990714).

Almost surely, 2^13981427 is an apocalyptic number.

13981427 is a deficient number, since it is larger than the sum of its proper divisors (1).

13981427 is an equidigital number, since it uses as much as digits as its factorization.

13981427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 13981427 is about 3739.1746415486. The cubic root of 13981427 is about 240.9075993176.

The spelling of 13981427 in words is "thirteen million, nine hundred eighty-one thousand, four hundred twenty-seven".