989619 has 4 divisors (see below), whose sum is σ = 1319496. Its totient is φ = 659744.

The previous prime is 989581. The next prime is 989623. The reversal of 989619 is 916989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916989 = 3 ⋅305663.

It is a cyclic number.

It is not a de Polignac number, because 989619 - 2¹⁶ = 924083 is a prime.

It is a super-2 number, since 2×989619² = 1958691530322, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (989629) 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, 164934 + ... + 164939.

It is an arithmetic number, because the mean of its divisors is an integer number (329874).

2⁹⁸⁹⁶¹⁹ is an apocalyptic number.

989619 is a deficient number, since it is larger than the sum of its proper divisors (329877).

989619 is a wasteful number, since it uses less digits than its factorization.

989619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329876.

The product of its digits is 34992, while the sum is 42.

The square root of 989619 is about 994.7959589785. The cubic root of 989619 is about 99.6527623222.

The spelling of 989619 in words is "nine hundred eighty-nine thousand, six hundred nineteen".