989982719 has 4 divisors (see below), whose sum is σ = 1079981160. Its totient is φ = 899984280.

The previous prime is 989982703. The next prime is 989982731. The reversal of 989982719 is 917289989.

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

It is a cyclic number.

It is not a de Polignac number, because 989982719 - 2⁴ = 989982703 is a prime.

It is a super-2 number, since 2×989982719² = 1960131567837265922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989982739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44999204 + ... + 44999225.

It is an arithmetic number, because the mean of its divisors is an integer number (269995290).

Almost surely, 2^989982719 is an apocalyptic number.

989982719 is a deficient number, since it is larger than the sum of its proper divisors (89998441).

989982719 is a wasteful number, since it uses less digits than its factorization.

989982719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89998440.

The product of its digits is 5878656, while the sum is 62.

The square root of 989982719 is about 31463.9908307894. The cubic root of 989982719 is about 996.6496943204.

The spelling of 989982719 in words is "nine hundred eighty-nine million, nine hundred eighty-two thousand, seven hundred nineteen".