9989519 has 4 divisors (see below), whose sum is σ = 10259544. Its totient is φ = 9719496.

The previous prime is 9989509. The next prime is 9989569. The reversal of 9989519 is 9159899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9159899 = 7 ⋅1308557.

It is a cyclic number.

It is not a de Polignac number, because 9989519 - 2⁴ = 9989503 is a prime.

It is a super-2 number, since 2×9989519² = 199580979702722, 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 (9989509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134957 + ... + 135030.

It is an arithmetic number, because the mean of its divisors is an integer number (2564886).

Almost surely, 2^9989519 is an apocalyptic number.

9989519 is a deficient number, since it is larger than the sum of its proper divisors (270025).

9989519 is a wasteful number, since it uses less digits than its factorization.

9989519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270024.

The product of its digits is 262440, while the sum is 50.

The square root of 9989519 is about 3160.6200341072. The cubic root of 9989519 is about 215.3681739248.

The spelling of 9989519 in words is "nine million, nine hundred eighty-nine thousand, five hundred nineteen".