989726814369 has 12 divisors (see below), whose sum is σ = 1460022535296. Its totient is φ = 645779197752.

The previous prime is 989726814367. The next prime is 989726814371. The reversal of 989726814369 is 963418627989.

989726814369 is a `hidden beast` number, since 9 + 8 + 97 + 26 + 81 + 436 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (989726814367) and next prime (989726814371).

It is not a de Polignac number, because 989726814369 - 2¹ = 989726814367 is a prime.

It is a super-2 number, since 2×989726814369² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989726814297 and 989726814306.

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 11 ways as a sum of consecutive naturals, for example, 1169889429 + ... + 1169890274.

It is an arithmetic number, because the mean of its divisors is an integer number (121668544608).

Almost surely, 2^989726814369 is an apocalyptic number.

It is an amenable number.

989726814369 is a deficient number, since it is larger than the sum of its proper divisors (470295720927).

989726814369 is a wasteful number, since it uses less digits than its factorization.

989726814369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339779756 (or 2339779753 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 72.

The spelling of 989726814369 in words is "nine hundred eighty-nine billion, seven hundred twenty-six million, eight hundred fourteen thousand, three hundred sixty-nine".