13887953 has 2 divisors, whose sum is σ = 13887954. Its totient is φ = 13887952.

The previous prime is 13887943. The next prime is 13887977. The reversal of 13887953 is 35978831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12229009 + 1658944 = 3497^2 + 1288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13887953 is a prime.

It is not a weakly prime, because it can be changed into another prime (13887943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6943976 + 6943977.

It is an arithmetic number, because the mean of its divisors is an integer number (6943977).

Almost surely, 2^13887953 is an apocalyptic number.

It is an amenable number.

13887953 is a deficient number, since it is larger than the sum of its proper divisors (1).

13887953 is an equidigital number, since it uses as much as digits as its factorization.

13887953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 13887953 is about 3726.6543977139. The cubic root of 13887953 is about 240.3695291219.

The spelling of 13887953 in words is "thirteen million, eight hundred eighty-seven thousand, nine hundred fifty-three".