4388641 has 2 divisors, whose sum is σ = 4388642. Its totient is φ = 4388640.

The previous prime is 4388617. The next prime is 4388651. The reversal of 4388641 is 1468834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3254416 + 1134225 = 1804^2 + 1065^2 .

It is a cyclic number.

It is not a de Polignac number, because 4388641 - 2⁵ = 4388609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4388597 and 4388606.

It is not a weakly prime, because it can be changed into another prime (4388611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194320 + 2194321.

It is an arithmetic number, because the mean of its divisors is an integer number (2194321).

Almost surely, 2^4388641 is an apocalyptic number.

It is an amenable number.

4388641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4388641 is an equidigital number, since it uses as much as digits as its factorization.

4388641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 4388641 is about 2094.9083512173. The cubic root of 4388641 is about 163.7231224460.

The spelling of 4388641 in words is "four million, three hundred eighty-eight thousand, six hundred forty-one".