84484008857 has 2 divisors, whose sum is σ = 84484008858. Its totient is φ = 84484008856.

The previous prime is 84484008803. The next prime is 84484008883. The reversal of 84484008857 is 75880048448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60333605641 + 24150403216 = 245629^2 + 155404^2 .

It is a cyclic number.

It is not a de Polignac number, because 84484008857 - 2¹⁸ = 84483746713 is a prime.

It is not a weakly prime, because it can be changed into another prime (84484008757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42242004428 + 42242004429.

It is an arithmetic number, because the mean of its divisors is an integer number (42242004429).

Almost surely, 2^84484008857 is an apocalyptic number.

It is an amenable number.

84484008857 is a deficient number, since it is larger than the sum of its proper divisors (1).

84484008857 is an equidigital number, since it uses as much as digits as its factorization.

84484008857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9175040, while the sum is 56.

The spelling of 84484008857 in words is "eighty-four billion, four hundred eighty-four million, eight thousand, eight hundred fifty-seven".