13969471 has 4 divisors (see below), whose sum is σ = 13984200. Its totient is φ = 13954744.

The previous prime is 13969469. The next prime is 13969493. The reversal of 13969471 is 17496931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13969471 - 2¹ = 13969469 is a prime.

It is a super-3 number, since 3×13969471³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13966471) 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 3 ways as a sum of consecutive naturals, for example, 5836 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (3496050).

Almost surely, 2^13969471 is an apocalyptic number.

13969471 is a deficient number, since it is larger than the sum of its proper divisors (14729).

13969471 is a wasteful number, since it uses less digits than its factorization.

13969471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14728.

The product of its digits is 40824, while the sum is 40.

The square root of 13969471 is about 3737.5755510759. The cubic root of 13969471 is about 240.8389102713.

The spelling of 13969471 in words is "thirteen million, nine hundred sixty-nine thousand, four hundred seventy-one".