84004663129 has 2 divisors, whose sum is σ = 84004663130. Its totient is φ = 84004663128.

The previous prime is 84004663081. The next prime is 84004663163. The reversal of 84004663129 is 92136640048.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49663013904 + 34341649225 = 222852^2 + 185315^2 .

It is a cyclic number.

It is not a de Polignac number, because 84004663129 - 2¹⁵ = 84004630361 is a prime.

It is not a weakly prime, because it can be changed into another prime (84004663189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42002331564 + 42002331565.

It is an arithmetic number, because the mean of its divisors is an integer number (42002331565).

Almost surely, 2^84004663129 is an apocalyptic number.

It is an amenable number.

84004663129 is a deficient number, since it is larger than the sum of its proper divisors (1).

84004663129 is an equidigital number, since it uses as much as digits as its factorization.

84004663129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 84004663129 in words is "eighty-four billion, four million, six hundred sixty-three thousand, one hundred twenty-nine".