3956309 has 12 divisors (see below), whose sum is σ = 4634784. Its totient is φ = 3367224.

The previous prime is 3956297. The next prime is 3956311. The reversal of 3956309 is 9036593.

It is a de Polignac number, because none of the positive numbers 2^k-3956309 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956509) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12734 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (386232).

Almost surely, 2^3956309 is an apocalyptic number.

It is an amenable number.

3956309 is a deficient number, since it is larger than the sum of its proper divisors (678475).

3956309 is a wasteful number, since it uses less digits than its factorization.

3956309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 3956309 is about 1989.0472593682. The cubic root of 3956309 is about 158.1600285367.

The spelling of 3956309 in words is "three million, nine hundred fifty-six thousand, three hundred nine".