3986620 has 24 divisors (see below), whose sum is σ = 9133488. Its totient is φ = 1449600.

The previous prime is 3986617. The next prime is 3986623. The reversal of 3986620 is 266893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3986617) and next prime (3986623).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986623) 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 7 ways as a sum of consecutive naturals, for example, 8841 + ... + 9280.

It is an arithmetic number, because the mean of its divisors is an integer number (380562).

Almost surely, 2^3986620 is an apocalyptic number.

It is an amenable number.

3986620 is an abundant number, since it is smaller than the sum of its proper divisors (5146868).

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

3986620 is a wasteful number, since it uses less digits than its factorization.

3986620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18141 (or 18139 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 3986620 is about 1996.6521980555. The cubic root of 3986620 is about 158.5629122623.

The spelling of 3986620 in words is "three million, nine hundred eighty-six thousand, six hundred twenty".