989769726 has 32 divisors (see below), whose sum is σ = 2399443200. Its totient is φ = 299930040.

The previous prime is 989769709. The next prime is 989769727. The reversal of 989769726 is 627967989.

It is a super-2 number, since 2×989769726² = 1959288221012230152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989769727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 832546 + ... + 833733.

It is an arithmetic number, because the mean of its divisors is an integer number (74982600).

Almost surely, 2^989769726 is an apocalyptic number.

989769726 is an abundant number, since it is smaller than the sum of its proper divisors (1409673474).

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

989769726 is a wasteful number, since it uses less digits than its factorization.

989769726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666301 (or 1666295 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 989769726 is about 31460.6059382206. The cubic root of 989769726 is about 996.5782133979.

The spelling of 989769726 in words is "nine hundred eighty-nine million, seven hundred sixty-nine thousand, seven hundred twenty-six".