989049 has 4 divisors (see below), whose sum is σ = 1318736. Its totient is φ = 659364.

The previous prime is 989029. The next prime is 989059. The reversal of 989049 is 940989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 989049 - 2¹⁵ = 956281 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 988998 and 989016.

It is not an unprimeable number, because it can be changed into a prime (989029) 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, 164839 + ... + 164844.

It is an arithmetic number, because the mean of its divisors is an integer number (329684).

2⁹⁸⁹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

989049 is a deficient number, since it is larger than the sum of its proper divisors (329687).

989049 is a wasteful number, since it uses less digits than its factorization.

989049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329686.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 989049 is about 994.5094268030. The cubic root of 989049 is about 99.6336260069.

The spelling of 989049 in words is "nine hundred eighty-nine thousand, forty-nine".