989726814366 has 64 divisors (see below), whose sum is σ = 2003294092800. Its totient is φ = 325962403200.

The previous prime is 989726814343. The next prime is 989726814367. The reversal of 989726814366 is 663418627989.

It is a self number, because there is not a number n which added to its sum of digits gives 989726814366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989726814367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154135836 + ... + 154142256.

It is an arithmetic number, because the mean of its divisors is an integer number (31301470200).

Almost surely, 2^989726814366 is an apocalyptic number.

989726814366 is an abundant number, since it is smaller than the sum of its proper divisors (1013567278434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989726814366 is a wasteful number, since it uses less digits than its factorization.

989726814366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7425.

The product of its digits is 188116992, while the sum is 69.

The spelling of 989726814366 in words is "nine hundred eighty-nine billion, seven hundred twenty-six million, eight hundred fourteen thousand, three hundred sixty-six".