13906081 has 12 divisors (see below), whose sum is σ = 16776192. Its totient is φ = 11290104.

The previous prime is 13906037. The next prime is 13906097. The reversal of 13906081 is 18060931.

It is a happy number.

It is not a de Polignac number, because 13906081 - 2⁷ = 13905953 is a prime.

It is a super-2 number, since 2×13906081² = 386758177557122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13906001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225 + ... + 5278.

It is an arithmetic number, because the mean of its divisors is an integer number (1398016).

Almost surely, 2^13906081 is an apocalyptic number.

It is an amenable number.

13906081 is a deficient number, since it is larger than the sum of its proper divisors (2870111).

13906081 is an equidigital number, since it uses as much as digits as its factorization.

13906081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548 (or 5529 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 13906081 is about 3729.0858129037. The cubic root of 13906081 is about 240.4740687489.

The spelling of 13906081 in words is "thirteen million, nine hundred six thousand, eighty-one".