13966401 has 16 divisors (see below), whose sum is σ = 20093184. Its totient is φ = 8596224.

The previous prime is 13966391. The next prime is 13966409. The reversal of 13966401 is 10466931.

It is not a de Polignac number, because 13966401 - 2⁵ = 13966369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13966409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120 + ... + 5286.

It is an arithmetic number, because the mean of its divisors is an integer number (1255824).

Almost surely, 2^13966401 is an apocalyptic number.

It is an amenable number.

13966401 is a deficient number, since it is larger than the sum of its proper divisors (6126783).

13966401 is a wasteful number, since it uses less digits than its factorization.

13966401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13966401 is about 3737.1648344701. The cubic root of 13966401 is about 240.8212663289.

The spelling of 13966401 in words is "thirteen million, nine hundred sixty-six thousand, four hundred one".