985789755406 has 4 divisors (see below), whose sum is σ = 1478684633112. Its totient is φ = 492894877702.

The previous prime is 985789755397. The next prime is 985789755491. The reversal of 985789755406 is 604557987589.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246447438850 + ... + 246447438853.

It is an arithmetic number, because the mean of its divisors is an integer number (369671158278).

Almost surely, 2^985789755406 is an apocalyptic number.

985789755406 is a deficient number, since it is larger than the sum of its proper divisors (492894877706).

985789755406 is a wasteful number, since it uses less digits than its factorization.

985789755406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492894877705.

The product of its (nonzero) digits is 762048000, while the sum is 73.

The spelling of 985789755406 in words is "nine hundred eighty-five billion, seven hundred eighty-nine million, seven hundred fifty-five thousand, four hundred six".