3960641 has 4 divisors (see below), whose sum is σ = 4057284. Its totient is φ = 3864000.

The previous prime is 3960631. The next prime is 3960667. The reversal of 3960641 is 1460693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1460693 = 13 ⋅112361.

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 3097600 = 929^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 3960641 - 2¹⁴ = 3944257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3960631) 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, 48260 + ... + 48341.

It is an arithmetic number, because the mean of its divisors is an integer number (1014321).

Almost surely, 2^3960641 is an apocalyptic number.

It is an amenable number.

3960641 is a deficient number, since it is larger than the sum of its proper divisors (96643).

3960641 is an equidigital number, since it uses as much as digits as its factorization.

3960641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96642.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 3960641 is about 1990.1359250061. The cubic root of 3960641 is about 158.2177337805.

The spelling of 3960641 in words is "three million, nine hundred sixty thousand, six hundred forty-one".