13923881 has 4 divisors (see below), whose sum is σ = 14120064. Its totient is φ = 13727700.

The previous prime is 13923863. The next prime is 13923893. The reversal of 13923881 is 18832931.

13923881 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18832931 = 13 ⋅1448687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13923881 is a prime.

It is a super-2 number, since 2×13923881² = 387748924204322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13923821) 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, 97985 + ... + 98126.

It is an arithmetic number, because the mean of its divisors is an integer number (3530016).

Almost surely, 2^13923881 is an apocalyptic number.

It is an amenable number.

13923881 is a deficient number, since it is larger than the sum of its proper divisors (196183).

13923881 is an equidigital number, since it uses as much as digits as its factorization.

13923881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196182.

The product of its digits is 10368, while the sum is 35.

The square root of 13923881 is about 3731.4716935815. The cubic root of 13923881 is about 240.5766285182.

The spelling of 13923881 in words is "thirteen million, nine hundred twenty-three thousand, eight hundred eighty-one".