13974881 has 4 divisors (see below), whose sum is σ = 14238612. Its totient is φ = 13711152.

The previous prime is 13974827. The next prime is 13974911. The reversal of 13974881 is 18847931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18847931 = 619 ⋅30449.

It can be written as a sum of positive squares in 2 ways, for example, as 5564881 + 8410000 = 2359^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 13974881 - 2²² = 9780577 is a prime.

It is a super-2 number, since 2×13974881² = 390594597928322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13970881) by changing a digit.

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, 131786 + ... + 131891.

It is an arithmetic number, because the mean of its divisors is an integer number (3559653).

Almost surely, 2^13974881 is an apocalyptic number.

It is an amenable number.

13974881 is a deficient number, since it is larger than the sum of its proper divisors (263731).

13974881 is an equidigital number, since it uses as much as digits as its factorization.

13974881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263730.

The product of its digits is 48384, while the sum is 41.

The square root of 13974881 is about 3738.2992122087. The cubic root of 13974881 is about 240.8699964005.

The spelling of 13974881 in words is "thirteen million, nine hundred seventy-four thousand, eight hundred eighty-one".