3971261417 has 4 divisors (see below), whose sum is σ = 4099366656. Its totient is φ = 3843156180.

The previous prime is 3971261377. The next prime is 3971261423. The reversal of 3971261417 is 7141621793.

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: 7141621793 = 53 ⋅134747581.

It is not a de Polignac number, because 3971261417 - 2¹⁰ = 3971260393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3971261477) 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, 64052573 + ... + 64052634.

It is an arithmetic number, because the mean of its divisors is an integer number (1024841664).

Almost surely, 2^3971261417 is an apocalyptic number.

It is an amenable number.

3971261417 is a deficient number, since it is larger than the sum of its proper divisors (128105239).

3971261417 is a wasteful number, since it uses less digits than its factorization.

3971261417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128105238.

The product of its digits is 63504, while the sum is 41.

The square root of 3971261417 is about 63017.9451981735. The cubic root of 3971261417 is about 1583.5902729048.

The spelling of 3971261417 in words is "three billion, nine hundred seventy-one million, two hundred sixty-one thousand, four hundred seventeen".