3956956917 has 4 divisors (see below), whose sum is σ = 5275942560. Its totient is φ = 2637971276.

The previous prime is 3956956903. The next prime is 3956956919. The reversal of 3956956917 is 7196596593.

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 3956956917 - 2⁷ = 3956956789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956956919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659492817 + ... + 659492822.

It is an arithmetic number, because the mean of its divisors is an integer number (1318985640).

Almost surely, 2^3956956917 is an apocalyptic number.

It is an amenable number.

3956956917 is a deficient number, since it is larger than the sum of its proper divisors (1318985643).

3956956917 is a wasteful number, since it uses less digits than its factorization.

3956956917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318985642.

The product of its digits is 13778100, while the sum is 60.

The square root of 3956956917 is about 62904.3473616888. The cubic root of 3956956917 is about 1581.6866191848.

The spelling of 3956956917 in words is "three billion, nine hundred fifty-six million, nine hundred fifty-six thousand, nine hundred seventeen".