989258489855 has 8 divisors (see below), whose sum is σ = 1187159608464. Its totient is φ = 791373844800.

The previous prime is 989258489789. The next prime is 989258489861. The reversal of 989258489855 is 558984852989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 989258489855 - 2³⁴ = 972078620671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 989258489855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3985886 + ... + 4226795.

It is an arithmetic number, because the mean of its divisors is an integer number (148394951058).

Almost surely, 2^989258489855 is an apocalyptic number.

989258489855 is a deficient number, since it is larger than the sum of its proper divisors (197901118609).

989258489855 is a wasteful number, since it uses less digits than its factorization.

989258489855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8236777.

The product of its digits is 2985984000, while the sum is 80.

The spelling of 989258489855 in words is "nine hundred eighty-nine billion, two hundred fifty-eight million, four hundred eighty-nine thousand, eight hundred fifty-five".