13961871 has 24 divisors (see below), whose sum is σ = 25144704. Its totient is φ = 7252560.

The previous prime is 13961861. The next prime is 13961887. The reversal of 13961871 is 17816931.

13961871 is a `hidden beast` number, since 1 + 39 + 618 + 7 + 1 = 666.

13961871 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 13961871 - 2⁹ = 13961359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13961861) 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, 9381 + ... + 10766.

It is an arithmetic number, because the mean of its divisors is an integer number (1047696).

Almost surely, 2^13961871 is an apocalyptic number.

13961871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13961871 is a deficient number, since it is larger than the sum of its proper divisors (11182833).

13961871 is a wasteful number, since it uses less digits than its factorization.

13961871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20171 (or 20168 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 13961871 is about 3736.5587108996. The cubic root of 13961871 is about 240.7952267333.

The spelling of 13961871 in words is "thirteen million, nine hundred sixty-one thousand, eight hundred seventy-one".