13989873 has 8 divisors (see below), whose sum is σ = 18889600. Its totient is φ = 9208368.

The previous prime is 13989869. The next prime is 13989907. The reversal of 13989873 is 37898931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13989873 - 2² = 13989869 is a prime.

It is a super-2 number, since 2×13989873² = 391433093112258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13989853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29278 + ... + 29751.

It is an arithmetic number, because the mean of its divisors is an integer number (2361200).

Almost surely, 2^13989873 is an apocalyptic number.

It is an amenable number.

13989873 is a deficient number, since it is larger than the sum of its proper divisors (4899727).

13989873 is an equidigital number, since it uses as much as digits as its factorization.

13989873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59111.

The product of its digits is 326592, while the sum is 48.

The square root of 13989873 is about 3740.3038646613. The cubic root of 13989873 is about 240.9560992790.

The spelling of 13989873 in words is "thirteen million, nine hundred eighty-nine thousand, eight hundred seventy-three".