13871406 has 32 divisors (see below), whose sum is σ = 29376000. Its totient is φ = 4354560.

The previous prime is 13871399. The next prime is 13871423. The reversal of 13871406 is 60417831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30670 + ... + 31118.

It is an arithmetic number, because the mean of its divisors is an integer number (918000).

Almost surely, 2^13871406 is an apocalyptic number.

13871406 is an abundant number, since it is smaller than the sum of its proper divisors (15504594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13871406 is a wasteful number, since it uses less digits than its factorization.

13871406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 13871406 is about 3724.4336482209. The cubic root of 13871406 is about 240.2740272797.

The spelling of 13871406 in words is "thirteen million, eight hundred seventy-one thousand, four hundred six".