13955905 has 4 divisors (see below), whose sum is σ = 16747092. Its totient is φ = 11164720.

The previous prime is 13955891. The next prime is 13955911. The reversal of 13955905 is 50955931.

13955905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50955931 = 13 ⋅3919687.

It can be written as a sum of positive squares in 2 ways, for example, as 10284849 + 3671056 = 3207^2 + 1916^2 .

It is not a de Polignac number, because 13955905 - 2⁹ = 13955393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395586 + ... + 1395595.

It is an arithmetic number, because the mean of its divisors is an integer number (4186773).

Almost surely, 2^13955905 is an apocalyptic number.

It is an amenable number.

13955905 is a deficient number, since it is larger than the sum of its proper divisors (2791187).

13955905 is an equidigital number, since it uses as much as digits as its factorization.

13955905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791186.

The product of its (nonzero) digits is 30375, while the sum is 37.

The square root of 13955905 is about 3735.7602974495. The cubic root of 13955905 is about 240.7609240482.

The spelling of 13955905 in words is "thirteen million, nine hundred fifty-five thousand, nine hundred five".