8120799441 has 6 divisors (see below), whose sum is σ = 11730043650. Its totient is φ = 5413866288.

The previous prime is 8120799419. The next prime is 8120799461. The reversal of 8120799441 is 1449970218.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7902498816 + 218300625 = 88896^2 + 14775^2 .

It is not a de Polignac number, because 8120799441 - 2¹¹ = 8120797393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8120799461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 451155516 + ... + 451155533.

It is an arithmetic number, because the mean of its divisors is an integer number (1955007275).

Almost surely, 2^8120799441 is an apocalyptic number.

It is an amenable number.

8120799441 is a deficient number, since it is larger than the sum of its proper divisors (3609244209).

8120799441 is a wasteful number, since it uses less digits than its factorization.

8120799441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902311055 (or 902311052 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 8120799441 is about 90115.4783652620. The cubic root of 8120799441 is about 2010.0163724812.

The spelling of 8120799441 in words is "eight billion, one hundred twenty million, seven hundred ninety-nine thousand, four hundred forty-one".