13898 has 4 divisors (see below), whose sum is σ = 20850. Its totient is φ = 6948.

The previous prime is 13883. The next prime is 13901. The reversal of 13898 is 89831.

It is a happy number.

13898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9409 + 4489 = 97^2 + 67^2 .

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 13898.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3473 + ... + 3476.

2¹³⁸⁹⁸ is an apocalyptic number.

13898 is a deficient number, since it is larger than the sum of its proper divisors (6952).

13898 is an equidigital number, since it uses as much as digits as its factorization.

13898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951.

The product of its digits is 1728, while the sum is 29.

The square root of 13898 is about 117.8897790311. The cubic root of 13898 is about 24.0427478880.

The spelling of 13898 in words is "thirteen thousand, eight hundred ninety-eight".