13955647 has 2 divisors, whose sum is σ = 13955648. Its totient is φ = 13955646.

The previous prime is 13955603. The next prime is 13955659. The reversal of 13955647 is 74655931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13955647 - 2¹⁹ = 13431359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13950647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6977823 + 6977824.

It is an arithmetic number, because the mean of its divisors is an integer number (6977824).

Almost surely, 2^13955647 is an apocalyptic number.

13955647 is a deficient number, since it is larger than the sum of its proper divisors (1).

13955647 is an equidigital number, since it uses as much as digits as its factorization.

13955647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 13955647 is about 3735.7257661665. The cubic root of 13955647 is about 240.7594404062.

The spelling of 13955647 in words is "thirteen million, nine hundred fifty-five thousand, six hundred forty-seven".