13934381 has 4 divisors (see below), whose sum is σ = 14020032. Its totient is φ = 13848732.

The previous prime is 13934363. The next prime is 13934399. The reversal of 13934381 is 18343931.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (13934363) and next prime (13934399).

It is a cyclic number.

It is not a de Polignac number, because 13934381 - 2¹⁰ = 13933357 is a prime.

It is a super-2 number, since 2×13934381² = 388333947706322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13934321) 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, 42581 + ... + 42906.

It is an arithmetic number, because the mean of its divisors is an integer number (3505008).

Almost surely, 2^13934381 is an apocalyptic number.

It is an amenable number.

13934381 is a deficient number, since it is larger than the sum of its proper divisors (85651).

13934381 is an equidigital number, since it uses as much as digits as its factorization.

13934381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85650.

The product of its digits is 7776, while the sum is 32.

The square root of 13934381 is about 3732.8783800172. The cubic root of 13934381 is about 240.6370862766.

The spelling of 13934381 in words is "thirteen million, nine hundred thirty-four thousand, three hundred eighty-one".