13875911 has 4 divisors (see below), whose sum is σ = 15858192. Its totient is φ = 11893632.

The previous prime is 13875907. The next prime is 13875919. The reversal of 13875911 is 11957831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11957831 = 29 ⋅412339.

It is a cyclic number.

It is not a de Polignac number, because 13875911 - 2² = 13875907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13875919) 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, 991130 + ... + 991143.

It is an arithmetic number, because the mean of its divisors is an integer number (3964548).

Almost surely, 2^13875911 is an apocalyptic number.

13875911 is a deficient number, since it is larger than the sum of its proper divisors (1982281).

13875911 is an equidigital number, since it uses as much as digits as its factorization.

13875911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982280.

The product of its digits is 7560, while the sum is 35.

The square root of 13875911 is about 3725.0383890639. The cubic root of 13875911 is about 240.3000356342.

The spelling of 13875911 in words is "thirteen million, eight hundred seventy-five thousand, nine hundred eleven".