13966447 has 8 divisors (see below), whose sum is σ = 15271632. Its totient is φ = 12667200.

The previous prime is 13966441. The next prime is 13966453. The reversal of 13966447 is 74466931.

It is an interprime number because it is at equal distance from previous prime (13966441) and next prime (13966453).

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 13966447 - 2³ = 13966439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13966441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4513 + ... + 6949.

It is an arithmetic number, because the mean of its divisors is an integer number (1908954).

Almost surely, 2^13966447 is an apocalyptic number.

13966447 is a deficient number, since it is larger than the sum of its proper divisors (1305185).

13966447 is a wasteful number, since it uses less digits than its factorization.

13966447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969.

The product of its digits is 108864, while the sum is 40.

The square root of 13966447 is about 3737.1709888631. The cubic root of 13966447 is about 240.8215307198.

The spelling of 13966447 in words is "thirteen million, nine hundred sixty-six thousand, four hundred forty-seven".