13989066 has 32 divisors (see below), whose sum is σ = 34435968. Its totient is φ = 3689280.

The previous prime is 13989047. The next prime is 13989067. The reversal of 13989066 is 66098931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (13989067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12265 + ... + 13356.

It is an arithmetic number, because the mean of its divisors is an integer number (1076124).

Almost surely, 2^13989066 is an apocalyptic number.

13989066 is an abundant number, since it is smaller than the sum of its proper divisors (20446902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13989066 is a wasteful number, since it uses less digits than its factorization.

13989066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25646.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 13989066 is about 3740.1959841698. The cubic root of 13989066 is about 240.9514660391.

The spelling of 13989066 in words is "thirteen million, nine hundred eighty-nine thousand, sixty-six".