3891796417 has 4 divisors (see below), whose sum is σ = 4120725636. Its totient is φ = 3662867200.

The previous prime is 3891796387. The next prime is 3891796421. The reversal of 3891796417 is 7146971983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7146971983 = 18329 ⋅389927.

It can be written as a sum of positive squares in 2 ways, for example, as 3143172096 + 748624321 = 56064^2 + 27361^2 .

It is a cyclic number.

It is not a de Polignac number, because 3891796417 - 2⁷ = 3891796289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3891796457) 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, 114464584 + ... + 114464617.

It is an arithmetic number, because the mean of its divisors is an integer number (1030181409).

Almost surely, 2^3891796417 is an apocalyptic number.

It is an amenable number.

3891796417 is a deficient number, since it is larger than the sum of its proper divisors (228929219).

3891796417 is a wasteful number, since it uses less digits than its factorization.

3891796417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228929218.

The product of its digits is 2286144, while the sum is 55.

The square root of 3891796417 is about 62384.2641777556. The cubic root of 3891796417 is about 1572.9564718433.

The spelling of 3891796417 in words is "three billion, eight hundred ninety-one million, seven hundred ninety-six thousand, four hundred seventeen".