13969864 has 32 divisors (see below), whose sum is σ = 27972000. Its totient is φ = 6521472.

The previous prime is 13969859. The next prime is 13969867. The reversal of 13969864 is 46896931.

It is not an unprimeable number, because it can be changed into a prime (13969867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10467 + ... + 11725.

It is an arithmetic number, because the mean of its divisors is an integer number (874125).

Almost surely, 2^13969864 is an apocalyptic number.

It is an amenable number.

13969864 is an abundant number, since it is smaller than the sum of its proper divisors (14002136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13969864 is a wasteful number, since it uses less digits than its factorization.

13969864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357 (or 1353 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 13969864 is about 3737.6281248942. The cubic root of 13969864 is about 240.8411687392.

The spelling of 13969864 in words is "thirteen million, nine hundred sixty-nine thousand, eight hundred sixty-four".