13901647 has 2 divisors, whose sum is σ = 13901648. Its totient is φ = 13901646.

The previous prime is 13901633. The next prime is 13901653. The reversal of 13901647 is 74610931.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74610931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13901647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13901687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950823 + 6950824.

It is an arithmetic number, because the mean of its divisors is an integer number (6950824).

Almost surely, 2^13901647 is an apocalyptic number.

13901647 is a deficient number, since it is larger than the sum of its proper divisors (1).

13901647 is an equidigital number, since it uses as much as digits as its factorization.

13901647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13901647 is about 3728.4912498221. The cubic root of 13901647 is about 240.4485073807.

The spelling of 13901647 in words is "thirteen million, nine hundred one thousand, six hundred forty-seven".