13871465 has 4 divisors (see below), whose sum is σ = 16645764. Its totient is φ = 11097168.

The previous prime is 13871447. The next prime is 13871471. The reversal of 13871465 is 56417831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56417831 = 73 ⋅772847.

It can be written as a sum of positive squares in 2 ways, for example, as 7706176 + 6165289 = 2776^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 13871465 - 2¹² = 13867369 is a prime.

It is a Duffinian number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 1387142 + ... + 1387151.

It is an arithmetic number, because the mean of its divisors is an integer number (4161441).

Almost surely, 2^13871465 is an apocalyptic number.

It is an amenable number.

13871465 is a deficient number, since it is larger than the sum of its proper divisors (2774299).

13871465 is an equidigital number, since it uses as much as digits as its factorization.

13871465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774298.

The product of its digits is 20160, while the sum is 35.

The square root of 13871465 is about 3724.4415688798. The cubic root of 13871465 is about 240.2743679361.

The spelling of 13871465 in words is "thirteen million, eight hundred seventy-one thousand, four hundred sixty-five".