804638941 has 2 divisors, whose sum is σ = 804638942. Its totient is φ = 804638940.

The previous prime is 804638929. The next prime is 804638993. The reversal of 804638941 is 149836408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 646634041 + 158004900 = 25429^2 + 12570^2 .

It is a cyclic number.

It is not a de Polignac number, because 804638941 - 2⁵ = 804638909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804638911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402319470 + 402319471.

It is an arithmetic number, because the mean of its divisors is an integer number (402319471).

Almost surely, 2^804638941 is an apocalyptic number.

It is an amenable number.

804638941 is a deficient number, since it is larger than the sum of its proper divisors (1).

804638941 is an equidigital number, since it uses as much as digits as its factorization.

804638941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 804638941 is about 28366.1583757829. The cubic root of 804638941 is about 930.1086476528.

The spelling of 804638941 in words is "eight hundred four million, six hundred thirty-eight thousand, nine hundred forty-one".