13981471 has 8 divisors (see below), whose sum is σ = 16198304. Its totient is φ = 11819520.

The previous prime is 13981469. The next prime is 13981477. The reversal of 13981471 is 17418931.

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 13981471 - 2¹ = 13981469 is a prime.

It is a super-3 number, since 3×13981471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13170 + ... + 14191.

It is an arithmetic number, because the mean of its divisors is an integer number (2024788).

Almost surely, 2^13981471 is an apocalyptic number.

13981471 is a deficient number, since it is larger than the sum of its proper divisors (2216833).

13981471 is an equidigital number, since it uses as much as digits as its factorization.

13981471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27441.

The product of its digits is 6048, while the sum is 34.

The square root of 13981471 is about 3739.1805251953. The cubic root of 13981471 is about 240.9078520320.

The spelling of 13981471 in words is "thirteen million, nine hundred eighty-one thousand, four hundred seventy-one".