84396722797 has 2 divisors, whose sum is σ = 84396722798. Its totient is φ = 84396722796.

The previous prime is 84396722783. The next prime is 84396722857. The reversal of 84396722797 is 79722769348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58813040196 + 25583682601 = 242514^2 + 159949^2 .

It is a cyclic number.

It is not a de Polignac number, because 84396722797 - 2³⁵ = 50036984429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84396725797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42198361398 + 42198361399.

It is an arithmetic number, because the mean of its divisors is an integer number (42198361399).

Almost surely, 2^84396722797 is an apocalyptic number.

It is an amenable number.

84396722797 is a deficient number, since it is larger than the sum of its proper divisors (1).

84396722797 is an equidigital number, since it uses as much as digits as its factorization.

84396722797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64012032, while the sum is 64.

The spelling of 84396722797 in words is "eighty-four billion, three hundred ninety-six million, seven hundred twenty-two thousand, seven hundred ninety-seven".