3959557 has 4 divisors (see below), whose sum is σ = 4525216. Its totient is φ = 3393900.

The previous prime is 3959551. The next prime is 3959587. The reversal of 3959557 is 7559593.

3959557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3959557 - 2¹¹ = 3957509 is a prime.

It is a Duffinian number.

3959557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3959551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282819 + ... + 282832.

It is an arithmetic number, because the mean of its divisors is an integer number (1131304).

Almost surely, 2^3959557 is an apocalyptic number.

It is an amenable number.

3959557 is a deficient number, since it is larger than the sum of its proper divisors (565659).

3959557 is an equidigital number, since it uses as much as digits as its factorization.

3959557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565658.

The product of its digits is 212625, while the sum is 43.

The square root of 3959557 is about 1989.8635631621. The cubic root of 3959557 is about 158.2032980976.

The spelling of 3959557 in words is "three million, nine hundred fifty-nine thousand, five hundred fifty-seven".