3958644 has 24 divisors (see below), whose sum is σ = 9365440. Its totient is φ = 1301184.

The previous prime is 3958627. The next prime is 3958657. The reversal of 3958644 is 4468593.

It is a congruent number.

It is an unprimeable number.

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, 1384 + ... + 3135.

Almost surely, 2^3958644 is an apocalyptic number.

It is an amenable number.

3958644 is an abundant number, since it is smaller than the sum of its proper divisors (5406796).

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

3958644 is a wasteful number, since it uses less digits than its factorization.

3958644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599 (or 4597 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 3958644 is about 1989.6341372222. The cubic root of 3958644 is about 158.1911375861.

The spelling of 3958644 in words is "three million, nine hundred fifty-eight thousand, six hundred forty-four".