13898771 has 2 divisors, whose sum is σ = 13898772. Its totient is φ = 13898770.

The previous prime is 13898719. The next prime is 13898779. The reversal of 13898771 is 17789831.

13898771 is nontrivially palindromic in base 11.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13898771 is a prime.

It is not a weakly prime, because it can be changed into another prime (13898779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6949385 + 6949386.

It is an arithmetic number, because the mean of its divisors is an integer number (6949386).

Almost surely, 2^13898771 is an apocalyptic number.

13898771 is a deficient number, since it is larger than the sum of its proper divisors (1).

13898771 is an equidigital number, since it uses as much as digits as its factorization.

13898771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 44.

The square root of 13898771 is about 3728.1055510809. The cubic root of 13898771 is about 240.4319247509.

The spelling of 13898771 in words is "thirteen million, eight hundred ninety-eight thousand, seven hundred seventy-one".