13881973 has 8 divisors (see below), whose sum is σ = 15938048. Its totient is φ = 11844144.

The previous prime is 13881943. The next prime is 13881977. The reversal of 13881973 is 37918831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13881973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13881977) 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, 2886 + ... + 6007.

It is an arithmetic number, because the mean of its divisors is an integer number (1992256).

Almost surely, 2^13881973 is an apocalyptic number.

It is an amenable number.

13881973 is a deficient number, since it is larger than the sum of its proper divisors (2056075).

13881973 is an equidigital number, since it uses as much as digits as its factorization.

13881973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123.

The product of its digits is 36288, while the sum is 40.

The square root of 13881973 is about 3725.8519831040. The cubic root of 13881973 is about 240.3350240093.

The spelling of 13881973 in words is "thirteen million, eight hundred eighty-one thousand, nine hundred seventy-three".