3923641 has 2 divisors, whose sum is σ = 3923642. Its totient is φ = 3923640.

The previous prime is 3923629. The next prime is 3923653. The reversal of 3923641 is 1463293.

It is a balanced prime because it is at equal distance from previous prime (3923629) and next prime (3923653).

It can be written as a sum of positive squares in only one way, i.e., 2019241 + 1904400 = 1421^2 + 1380^2 .

It is a cyclic number.

It is not a de Polignac number, because 3923641 - 2⁵ = 3923609 is a prime.

It is not a weakly prime, because it can be changed into another prime (3923611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961820 + 1961821.

It is an arithmetic number, because the mean of its divisors is an integer number (1961821).

Almost surely, 2^3923641 is an apocalyptic number.

It is an amenable number.

3923641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923641 is an equidigital number, since it uses as much as digits as its factorization.

3923641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 3923641 is about 1980.8182652631. The cubic root of 3923641 is about 157.7235056381.

The spelling of 3923641 in words is "three million, nine hundred twenty-three thousand, six hundred forty-one".