13986858 has 16 divisors (see below), whose sum is σ = 28368576. Its totient is φ = 4596480.

The previous prime is 13986823. The next prime is 13986887. The reversal of 13986858 is 85868931.

13986858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15991 + ... + 16842.

It is an arithmetic number, because the mean of its divisors is an integer number (1773036).

Almost surely, 2^13986858 is an apocalyptic number.

13986858 is an abundant number, since it is smaller than the sum of its proper divisors (14381718).

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

13986858 is a wasteful number, since it uses less digits than its factorization.

13986858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32909.

The product of its digits is 414720, while the sum is 48.

The square root of 13986858 is about 3739.9008008235. The cubic root of 13986858 is about 240.9387883085.

It can be divided in two parts, 1398 and 6858, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 13986858 in words is "thirteen million, nine hundred eighty-six thousand, eight hundred fifty-eight".