13951889 has 4 divisors (see below), whose sum is σ = 15945024. Its totient is φ = 11958756.

The previous prime is 13951867. The next prime is 13951919. The reversal of 13951889 is 98815931.

It is a happy number.

13951889 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 not a de Polignac number, because 13951889 - 2¹² = 13947793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13951489) 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, 996557 + ... + 996570.

It is an arithmetic number, because the mean of its divisors is an integer number (3986256).

Almost surely, 2^13951889 is an apocalyptic number.

It is an amenable number.

13951889 is a deficient number, since it is larger than the sum of its proper divisors (1993135).

13951889 is an equidigital number, since it uses as much as digits as its factorization.

13951889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993134.

The product of its digits is 77760, while the sum is 44.

The square root of 13951889 is about 3735.2227510551. Note that the first 3 decimals coincide. The cubic root of 13951889 is about 240.7378277643.

The spelling of 13951889 in words is "thirteen million, nine hundred fifty-one thousand, eight hundred eighty-nine".