13988401 has 4 divisors (see below), whose sum is σ = 15986752. Its totient is φ = 11990052.

The previous prime is 13988341. The next prime is 13988413. The reversal of 13988401 is 10488931.

It is a happy number.

13988401 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13988401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13988441) 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, 999165 + ... + 999178.

It is an arithmetic number, because the mean of its divisors is an integer number (3996688).

Almost surely, 2^13988401 is an apocalyptic number.

It is an amenable number.

13988401 is a deficient number, since it is larger than the sum of its proper divisors (1998351).

13988401 is an equidigital number, since it uses as much as digits as its factorization.

13988401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998350.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 13988401 is about 3740.1070840285. The cubic root of 13988401 is about 240.9476479318.

The spelling of 13988401 in words is "thirteen million, nine hundred eighty-eight thousand, four hundred one".