804986732989 has 2 divisors, whose sum is σ = 804986732990. Its totient is φ = 804986732988.

The previous prime is 804986732981. The next prime is 804986733007. The reversal of 804986732989 is 989237689408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792678605625 + 12308127364 = 890325^2 + 110942^2 .

It is a cyclic number.

It is not a de Polignac number, because 804986732989 - 2³ = 804986732981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804986732981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402493366494 + 402493366495.

It is an arithmetic number, because the mean of its divisors is an integer number (402493366495).

Almost surely, 2^804986732989 is an apocalyptic number.

It is an amenable number.

804986732989 is a deficient number, since it is larger than the sum of its proper divisors (1).

804986732989 is an equidigital number, since it uses as much as digits as its factorization.

804986732989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376233984, while the sum is 73.

The spelling of 804986732989 in words is "eight hundred four billion, nine hundred eighty-six million, seven hundred thirty-two thousand, nine hundred eighty-nine".