989859773 has 16 divisors (see below), whose sum is σ = 1145442816. Its totient is φ = 837876480.

The previous prime is 989859769. The next prime is 989859811. The reversal of 989859773 is 377958989.

989859773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 989859773 - 2² = 989859769 is a prime.

It is a super-2 number, since 2×989859773² = 1959644740407223058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989859713) 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, 229628 + ... + 233898.

It is an arithmetic number, because the mean of its divisors is an integer number (71590176).

Almost surely, 2^989859773 is an apocalyptic number.

It is an amenable number.

989859773 is a deficient number, since it is larger than the sum of its proper divisors (155583043).

989859773 is a wasteful number, since it uses less digits than its factorization.

989859773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684.

The product of its digits is 34292160, while the sum is 65.

The square root of 989859773 is about 31462.0370128827. The cubic root of 989859773 is about 996.6084346217.

The spelling of 989859773 in words is "nine hundred eighty-nine million, eight hundred fifty-nine thousand, seven hundred seventy-three".