3968161 has 4 divisors (see below), whose sum is σ = 3974400. Its totient is φ = 3961924.

The previous prime is 3968149. The next prime is 3968177. The reversal of 3968161 is 1618693.

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: 1618693 = 29 ⋅55817.

It is a cyclic number.

It is not a de Polignac number, because 3968161 - 2¹¹ = 3966113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3968761) 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, 2041 + ... + 3478.

It is an arithmetic number, because the mean of its divisors is an integer number (993600).

Almost surely, 2^3968161 is an apocalyptic number.

It is an amenable number.

3968161 is a deficient number, since it is larger than the sum of its proper divisors (6239).

3968161 is an equidigital number, since it uses as much as digits as its factorization.

3968161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6238.

The product of its digits is 7776, while the sum is 34.

The square root of 3968161 is about 1992.0243472408. The cubic root of 3968161 is about 158.3178055563.

The spelling of 3968161 in words is "three million, nine hundred sixty-eight thousand, one hundred sixty-one".