984677484776489 has 4 divisors (see below), whose sum is σ = 1125345696887424. Its totient is φ = 844009272665556.

The previous prime is 984677484776441. The next prime is 984677484776507.

984677484776489 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984677484776489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 984677484776395 and 984677484776404.

It is not an unprimeable number, because it can be changed into a prime (984677484776429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70334106055457 + ... + 70334106055470.

It is an arithmetic number, because the mean of its divisors is an integer number (281336424221856).

Almost surely, 2^{984677484776489} is an apocalyptic number.

It is an amenable number.

984677484776489 is a deficient number, since it is larger than the sum of its proper divisors (140668212110935).

984677484776489 is a wasteful number, since it uses less digits than its factorization.

984677484776489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140668212110934.

The product of its digits is 917676490752, while the sum is 98.

The spelling of 984677484776489 in words is "nine hundred eighty-four trillion, six hundred seventy-seven billion, four hundred eighty-four million, seven hundred seventy-six thousand, four hundred eighty-nine".