8049846821 has 2 divisors, whose sum is σ = 8049846822. Its totient is φ = 8049846820.

The previous prime is 8049846809. The next prime is 8049846913. The reversal of 8049846821 is 1286489408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7936849921 + 112996900 = 89089^2 + 10630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8049846821 is a prime.

It is a super-3 number, since 3×8049846821³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8049846821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8049846221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4024923410 + 4024923411.

It is an arithmetic number, because the mean of its divisors is an integer number (4024923411).

Almost surely, 2^8049846821 is an apocalyptic number.

It is an amenable number.

8049846821 is a deficient number, since it is larger than the sum of its proper divisors (1).

8049846821 is an equidigital number, since it uses as much as digits as its factorization.

8049846821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 8049846821 is about 89720.9385873777. The cubic root of 8049846821 is about 2004.1453040413.

The spelling of 8049846821 in words is "eight billion, forty-nine million, eight hundred forty-six thousand, eight hundred twenty-one".