13912971 has 4 divisors (see below), whose sum is σ = 18550632. Its totient is φ = 9275312.

The previous prime is 13912961. The next prime is 13912979. The reversal of 13912971 is 17921931.

13912971 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 a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13912971 - 2⁵ = 13912939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13912979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2318826 + ... + 2318831.

It is an arithmetic number, because the mean of its divisors is an integer number (4637658).

Almost surely, 2^13912971 is an apocalyptic number.

13912971 is a deficient number, since it is larger than the sum of its proper divisors (4637661).

13912971 is an equidigital number, since it uses as much as digits as its factorization.

13912971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637660.

The product of its digits is 3402, while the sum is 33.

The square root of 13912971 is about 3730.0095174141. The cubic root of 13912971 is about 240.5137778222.

The spelling of 13912971 in words is "thirteen million, nine hundred twelve thousand, nine hundred seventy-one".