3971075969 has 4 divisors (see below), whose sum is σ = 4538372544. Its totient is φ = 3403779396.

The previous prime is 3971075887. The next prime is 3971076071. The reversal of 3971075969 is 9695701793.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9695701793 = 433 ⋅22391921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3971075969 is a prime.

It is a super-2 number, since 2×3971075969² = 31538888703138577922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3971075569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283648277 + ... + 283648290.

It is an arithmetic number, because the mean of its divisors is an integer number (1134593136).

Almost surely, 2^3971075969 is an apocalyptic number.

It is an amenable number.

3971075969 is a deficient number, since it is larger than the sum of its proper divisors (567296575).

3971075969 is an equidigital number, since it uses as much as digits as its factorization.

3971075969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567296574.

The product of its (nonzero) digits is 3214890, while the sum is 56.

The square root of 3971075969 is about 63016.4737905891. The cubic root of 3971075969 is about 1583.5656226162.

The spelling of 3971075969 in words is "three billion, nine hundred seventy-one million, seventy-five thousand, nine hundred sixty-nine".