3958686 has 16 divisors (see below), whose sum is σ = 8797200. Its totient is φ = 1319544.

The previous prime is 3958657. The next prime is 3958687. The reversal of 3958686 is 6868593.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36601 + ... + 36708.

It is an arithmetic number, because the mean of its divisors is an integer number (549825).

Almost surely, 2^3958686 is an apocalyptic number.

3958686 is an abundant number, since it is smaller than the sum of its proper divisors (4838514).

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

3958686 is a wasteful number, since it uses less digits than its factorization.

3958686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73320 (or 73314 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3958686 is about 1989.6446918985. The cubic root of 3958686 is about 158.1916970373.

The spelling of 3958686 in words is "three million, nine hundred fifty-eight thousand, six hundred eighty-six".