14155986 has 32 divisors (see below), whose sum is σ = 30820608. Its totient is φ = 4308480.

The previous prime is 14155963. The next prime is 14155997. The reversal of 14155986 is 68955141.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6631 + ... + 8501.

It is an arithmetic number, because the mean of its divisors is an integer number (963144).

Almost surely, 2^14155986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14155986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15410304).

14155986 is an abundant number, since it is smaller than the sum of its proper divisors (16664622).

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

14155986 is a wasteful number, since it uses less digits than its factorization.

14155986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986.

The product of its digits is 43200, while the sum is 39.

The square root of 14155986 is about 3762.4441524094. Note that the first 3 decimals coincide. The cubic root of 14155986 is about 241.9060377880.

The spelling of 14155986 in words is "fourteen million, one hundred fifty-five thousand, nine hundred eighty-six".