84004663279 has 2 divisors, whose sum is σ = 84004663280. Its totient is φ = 84004663278.

The previous prime is 84004663231. The next prime is 84004663373. The reversal of 84004663279 is 97236640048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84004663279 - 2¹³ = 84004655087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84004663229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42002331639 + 42002331640.

It is an arithmetic number, because the mean of its divisors is an integer number (42002331640).

Almost surely, 2^84004663279 is an apocalyptic number.

84004663279 is a deficient number, since it is larger than the sum of its proper divisors (1).

84004663279 is an equidigital number, since it uses as much as digits as its factorization.

84004663279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 84004663279 in words is "eighty-four billion, four million, six hundred sixty-three thousand, two hundred seventy-nine".