13789971 has 24 divisors (see below), whose sum is σ = 21957936. Its totient is φ = 8285760.

The previous prime is 13789967. The next prime is 13789999. The reversal of 13789971 is 17998731.

13789971 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13789971 - 2² = 13789967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13789961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3661 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (914914).

Almost surely, 2^13789971 is an apocalyptic number.

13789971 is a deficient number, since it is larger than the sum of its proper divisors (8167965).

13789971 is a wasteful number, since it uses less digits than its factorization.

13789971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803 (or 2800 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 13789971 is about 3713.4850208396. The cubic root of 13789971 is about 239.8029111108.

The spelling of 13789971 in words is "thirteen million, seven hundred eighty-nine thousand, nine hundred seventy-one".