989449 has 4 divisors (see below), whose sum is σ = 991440. Its totient is φ = 987460.

The previous prime is 989441. The next prime is 989467. The reversal of 989449 is 944989.

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, and also an emirpimes, since its reverse is a distinct semiprime: 944989 = 257 ⋅3677.

It is a cyclic number.

It is not a de Polignac number, because 989449 - 2³ = 989441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989441) 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, 462 + ... + 1480.

It is an arithmetic number, because the mean of its divisors is an integer number (247860).

2⁹⁸⁹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

989449 is a deficient number, since it is larger than the sum of its proper divisors (1991).

989449 is a wasteful number, since it uses less digits than its factorization.

989449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its digits is 93312, while the sum is 43.

The square root of 989449 is about 994.7105106512. The cubic root of 989449 is about 99.6470557692.

The spelling of 989449 in words is "nine hundred eighty-nine thousand, four hundred forty-nine".