3949659 has 24 divisors (see below), whose sum is σ = 6619392. Its totient is φ = 2222640.

The previous prime is 3949657. The next prime is 3949669. The reversal of 3949659 is 9569493.

It is a happy number.

3949659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3949659 - 2¹ = 3949657 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 9² + 4⁶ + 9⁵ + 6⁷ + 5⁹ + 9⁵ .

It is not an unprimeable number, because it can be changed into a prime (3949651) 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 23 ways as a sum of consecutive naturals, for example, 4032 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (275808).

Almost surely, 2^3949659 is an apocalyptic number.

3949659 is a deficient number, since it is larger than the sum of its proper divisors (2669733).

3949659 is a wasteful number, since it uses less digits than its factorization.

3949659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967 (or 964 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 3949659 is about 1987.3749017234. The cubic root of 3949659 is about 158.0713639060.

The spelling of 3949659 in words is "three million, nine hundred forty-nine thousand, six hundred fifty-nine".