13945471 has 2 divisors, whose sum is σ = 13945472. Its totient is φ = 13945470.

The previous prime is 13945469. The next prime is 13945493. The reversal of 13945471 is 17454931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13945471 - 2¹ = 13945469 is a prime.

It is a super-3 number, since 3×13945471³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 13945469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13945441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972735 + 6972736.

It is an arithmetic number, because the mean of its divisors is an integer number (6972736).

Almost surely, 2^13945471 is an apocalyptic number.

13945471 is a deficient number, since it is larger than the sum of its proper divisors (1).

13945471 is an equidigital number, since it uses as much as digits as its factorization.

13945471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 13945471 is about 3734.3635334552. The cubic root of 13945471 is about 240.7009082152.

The spelling of 13945471 in words is "thirteen million, nine hundred forty-five thousand, four hundred seventy-one".