8738641 has 2 divisors, whose sum is σ = 8738642. Its totient is φ = 8738640.

The previous prime is 8738591. The next prime is 8738659. The reversal of 8738641 is 1468378.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5017600 + 3721041 = 2240^2 + 1929^2 .

It is a cyclic number.

It is not a de Polignac number, because 8738641 - 2⁹ = 8738129 is a prime.

8738641 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8738641.

It is not a weakly prime, because it can be changed into another prime (8738671) 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, 4369320 + 4369321.

It is an arithmetic number, because the mean of its divisors is an integer number (4369321).

Almost surely, 2^8738641 is an apocalyptic number.

It is an amenable number.

8738641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8738641 is an equidigital number, since it uses as much as digits as its factorization.

8738641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 8738641 is about 2956.1192465799. The cubic root of 8738641 is about 205.9750574633.

The spelling of 8738641 in words is "eight million, seven hundred thirty-eight thousand, six hundred forty-one".