13903881 has 8 divisors (see below), whose sum is σ = 18852960. Its totient is φ = 9112032.

The previous prime is 13903853. The next prime is 13903889. The reversal of 13903881 is 18830931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13903881 - 2⁵ = 13903849 is a prime.

It is a super-2 number, since 2×13903881² = 386635813724322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13903889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39100 + ... + 39453.

It is an arithmetic number, because the mean of its divisors is an integer number (2356620).

Almost surely, 2^13903881 is an apocalyptic number.

It is an amenable number.

13903881 is a deficient number, since it is larger than the sum of its proper divisors (4949079).

13903881 is an equidigital number, since it uses as much as digits as its factorization.

13903881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78615.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 13903881 is about 3728.7908227735. The cubic root of 13903881 is about 240.4613867466.

The spelling of 13903881 in words is "thirteen million, nine hundred three thousand, eight hundred eighty-one".