13988371 has 4 divisors (see below), whose sum is σ = 13998312. Its totient is φ = 13978432.

The previous prime is 13988341. The next prime is 13988413. The reversal of 13988371 is 17388931.

13988371 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 17388931 = 7 ⋅2484133.

It is a cyclic number.

It is not a de Polignac number, because 13988371 - 2⁷ = 13988243 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13988321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2425 + ... + 5818.

It is an arithmetic number, because the mean of its divisors is an integer number (3499578).

Almost surely, 2^13988371 is an apocalyptic number.

13988371 is a deficient number, since it is larger than the sum of its proper divisors (9941).

13988371 is an equidigital number, since it uses as much as digits as its factorization.

13988371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9940.

The product of its digits is 36288, while the sum is 40.

The square root of 13988371 is about 3740.1030734460. The cubic root of 13988371 is about 240.9474756836.

The spelling of 13988371 in words is "thirteen million, nine hundred eighty-eight thousand, three hundred seventy-one".