3958689 has 16 divisors (see below), whose sum is σ = 6082560. Its totient is φ = 2243280.

The previous prime is 3958687. The next prime is 3958697. The reversal of 3958689 is 9868593.

It is not a de Polignac number, because 3958689 - 2¹ = 3958687 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 2032 + ... + 3470.

It is an arithmetic number, because the mean of its divisors is an integer number (380160).

Almost surely, 2^3958689 is an apocalyptic number.

It is an amenable number.

3958689 is a deficient number, since it is larger than the sum of its proper divisors (2123871).

3958689 is a wasteful number, since it uses less digits than its factorization.

3958689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its digits is 466560, while the sum is 48.

The square root of 3958689 is about 1989.6454458018. The cubic root of 3958689 is about 158.1917369980.

The spelling of 3958689 in words is "three million, nine hundred fifty-eight thousand, six hundred eighty-nine".