2399641 has 2 divisors, whose sum is σ = 2399642. Its totient is φ = 2399640.

The previous prime is 2399633. The next prime is 2399647. The reversal of 2399641 is 1469932.

2399641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 326041 = 1440^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 2399641 - 2³ = 2399633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2399597 and 2399606.

It is not a weakly prime, because it can be changed into another prime (2399647) 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, 1199820 + 1199821.

It is an arithmetic number, because the mean of its divisors is an integer number (1199821).

2^2399641 is an apocalyptic number.

It is an amenable number.

2399641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2399641 is an equidigital number, since it uses as much as digits as its factorization.

2399641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 2399641 is about 1549.0774673979. The cubic root of 2399641 is about 133.8799139494.

The spelling of 2399641 in words is "two million, three hundred ninety-nine thousand, six hundred forty-one".