8049098821 has 2 divisors, whose sum is σ = 8049098822. Its totient is φ = 8049098820.

The previous prime is 8049098809. The next prime is 8049098879. The reversal of 8049098821 is 1288909408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8048601796 + 497025 = 89714^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 8049098821 - 2¹³ = 8049090629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8049098891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4024549410 + 4024549411.

It is an arithmetic number, because the mean of its divisors is an integer number (4024549411).

Almost surely, 2^8049098821 is an apocalyptic number.

It is an amenable number.

8049098821 is a deficient number, since it is larger than the sum of its proper divisors (1).

8049098821 is an equidigital number, since it uses as much as digits as its factorization.

8049098821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 8049098821 is about 89716.7700098482. The cubic root of 8049098821 is about 2004.0832263746.

The spelling of 8049098821 in words is "eight billion, forty-nine million, ninety-eight thousand, eight hundred twenty-one".