3959556 has 24 divisors (see below), whose sum is σ = 9295104. Its totient is φ = 1311840.

The previous prime is 3959551. The next prime is 3959587. The reversal of 3959556 is 6559593.

It is a d-powerful number, because it can be written as 3 + 9² + 5 + 9⁴ + 5⁹ + 5⁹ + 6⁶ .

It is not an unprimeable number, because it can be changed into a prime (3959551) 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, 1261 + ... + 3083.

It is an arithmetic number, because the mean of its divisors is an integer number (387296).

Almost surely, 2^3959556 is an apocalyptic number.

3959556 is the 1259-th centered pentagonal number.

It is an amenable number.

3959556 is an abundant number, since it is smaller than the sum of its proper divisors (5335548).

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

3959556 is a wasteful number, since it uses less digits than its factorization.

3959556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 2009 counting only the distinct ones).

The product of its digits is 182250, while the sum is 42.

The square root of 3959556 is about 1989.8633118885. The cubic root of 3959556 is about 158.2032847793.

It can be divided in two parts, 39 and 59556, that added together give a palindrome (59595).

The spelling of 3959556 in words is "three million, nine hundred fifty-nine thousand, five hundred fifty-six".