8404440901 has 2 divisors, whose sum is σ = 8404440902. Its totient is φ = 8404440900.

The previous prime is 8404440857. The next prime is 8404440911. The reversal of 8404440901 is 1090444048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8333864100 + 70576801 = 91290^2 + 8401^2 .

It is a cyclic number.

It is not a de Polignac number, because 8404440901 - 2¹³ = 8404432709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8404440911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4202220450 + 4202220451.

It is an arithmetic number, because the mean of its divisors is an integer number (4202220451).

Almost surely, 2^8404440901 is an apocalyptic number.

It is an amenable number.

8404440901 is a deficient number, since it is larger than the sum of its proper divisors (1).

8404440901 is an equidigital number, since it uses as much as digits as its factorization.

8404440901 is an odious number, because the sum of its binary digits is odd.

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

The square root of 8404440901 is about 91675.7377990491. The cubic root of 8404440901 is about 2033.1508819151.

Adding to 8404440901 its reverse (1090444048), we get a palindrome (9494884949).

The spelling of 8404440901 in words is "eight billion, four hundred four million, four hundred forty thousand, nine hundred one".