13989111 has 12 divisors (see below), whose sum is σ = 19687032. Its totient is φ = 8834544.

The previous prime is 13989067. The next prime is 13989119. The reversal of 13989111 is 11198931.

It is a happy number.

It is not a de Polignac number, because 13989111 - 2⁶ = 13989047 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13989119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5376 + ... + 7541.

It is an arithmetic number, because the mean of its divisors is an integer number (1640586).

Almost surely, 2^13989111 is an apocalyptic number.

13989111 is a deficient number, since it is larger than the sum of its proper divisors (5697921).

13989111 is a wasteful number, since it uses less digits than its factorization.

13989111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12958 (or 12939 counting only the distinct ones).

The product of its digits is 1944, while the sum is 33.

The square root of 13989111 is about 3740.2019998925. The cubic root of 13989111 is about 240.9517244029.

The spelling of 13989111 in words is "thirteen million, nine hundred eighty-nine thousand, one hundred eleven".