13917081 has 8 divisors (see below), whose sum is σ = 19008864. Its totient is φ = 9051680.

The previous prime is 13917077. The next prime is 13917107. The reversal of 13917081 is 18071931.

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

It is a cyclic number.

It is not a de Polignac number, because 13917081 - 2² = 13917077 is a prime.

It is a super-2 number, since 2×13917081² = 387370287121122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13917061) 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 7 ways as a sum of consecutive naturals, for example, 56451 + ... + 56696.

It is an arithmetic number, because the mean of its divisors is an integer number (2376108).

Almost surely, 2^13917081 is an apocalyptic number.

It is an amenable number.

13917081 is a deficient number, since it is larger than the sum of its proper divisors (5091783).

13917081 is a wasteful number, since it uses less digits than its factorization.

13917081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113191.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 13917081 is about 3730.5604136644. The cubic root of 13917081 is about 240.5374587049.

The spelling of 13917081 in words is "thirteen million, nine hundred seventeen thousand, eighty-one".