84884004109 has 2 divisors, whose sum is σ = 84884004110. Its totient is φ = 84884004108.

The previous prime is 84884004091. The next prime is 84884004119. The reversal of 84884004109 is 90140048848.

Together with previous prime (84884004091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80657704009 + 4226300100 = 284003^2 + 65010^2 .

It is a cyclic number.

It is not a de Polignac number, because 84884004109 - 2⁵ = 84884004077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84884004119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42442002054 + 42442002055.

It is an arithmetic number, because the mean of its divisors is an integer number (42442002055).

Almost surely, 2^84884004109 is an apocalyptic number.

It is an amenable number.

84884004109 is a deficient number, since it is larger than the sum of its proper divisors (1).

84884004109 is an equidigital number, since it uses as much as digits as its factorization.

84884004109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 46.

The spelling of 84884004109 in words is "eighty-four billion, eight hundred eighty-four million, four thousand, one hundred nine".