13942889 has 4 divisors (see below), whose sum is σ = 13952400. Its totient is φ = 13933380.

The previous prime is 13942871. The next prime is 13942891. The reversal of 13942889 is 98824931.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98824931 = 31 ⋅3187901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13942889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13942289) 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, 2039 + ... + 5660.

It is an arithmetic number, because the mean of its divisors is an integer number (3488100).

Almost surely, 2^13942889 is an apocalyptic number.

It is an amenable number.

13942889 is a deficient number, since it is larger than the sum of its proper divisors (9511).

13942889 is an equidigital number, since it uses as much as digits as its factorization.

13942889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9510.

The product of its digits is 124416, while the sum is 44.

The square root of 13942889 is about 3734.0178092773. The cubic root of 13942889 is about 240.6860520633.

The spelling of 13942889 in words is "thirteen million, nine hundred forty-two thousand, eight hundred eighty-nine".