13986775 has 24 divisors (see below), whose sum is σ = 19092528. Its totient is φ = 10080000.

The previous prime is 13986769. The next prime is 13986809. The reversal of 13986775 is 57768931.

It is not a de Polignac number, because 13986775 - 2⁵ = 13986743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49635 + ... + 49915.

It is an arithmetic number, because the mean of its divisors is an integer number (795522).

Almost surely, 2^13986775 is an apocalyptic number.

13986775 is a deficient number, since it is larger than the sum of its proper divisors (5105753).

13986775 is a wasteful number, since it uses less digits than its factorization.

13986775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 478 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 13986775 is about 3739.8897042560. The cubic root of 13986775 is about 240.9383117193.

The spelling of 13986775 in words is "thirteen million, nine hundred eighty-six thousand, seven hundred seventy-five".