84404775659 has 2 divisors, whose sum is σ = 84404775660. Its totient is φ = 84404775658.

The previous prime is 84404775601. The next prime is 84404775671. The reversal of 84404775659 is 95657740448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84404775659 - 2¹⁶ = 84404710123 is a prime.

It is a super-2 number, since 2×84404775659² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84404775598 and 84404775607.

It is not a weakly prime, because it can be changed into another prime (84404705659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42202387829 + 42202387830.

It is an arithmetic number, because the mean of its divisors is an integer number (42202387830).

Almost surely, 2^84404775659 is an apocalyptic number.

84404775659 is a deficient number, since it is larger than the sum of its proper divisors (1).

84404775659 is an equidigital number, since it uses as much as digits as its factorization.

84404775659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 84404775659 in words is "eighty-four billion, four hundred four million, seven hundred seventy-five thousand, six hundred fifty-nine".