3956168409 has 4 divisors (see below), whose sum is σ = 5274891216. Its totient is φ = 2637445604.

The previous prime is 3956168401. The next prime is 3956168417. The reversal of 3956168409 is 9048616593.

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 an interprime number because it is at equal distance from previous prime (3956168401) and next prime (3956168417).

It is a cyclic number.

It is not a de Polignac number, because 3956168409 - 2³ = 3956168401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3956168401) 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, 659361399 + ... + 659361404.

It is an arithmetic number, because the mean of its divisors is an integer number (1318722804).

Almost surely, 2^3956168409 is an apocalyptic number.

It is an amenable number.

3956168409 is a deficient number, since it is larger than the sum of its proper divisors (1318722807).

3956168409 is a wasteful number, since it uses less digits than its factorization.

3956168409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318722806.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 3956168409 is about 62898.0795334802. The cubic root of 3956168409 is about 1581.5815506157.

The spelling of 3956168409 in words is "three billion, nine hundred fifty-six million, one hundred sixty-eight thousand, four hundred nine".