1489989 has 8 divisors (see below), whose sum is σ = 2024352. Its totient is φ = 974480.

The previous prime is 1489979. The next prime is 1489997. The reversal of 1489989 is 9899841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1489989 - 2⁴ = 1489973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4527 + ... + 4844.

It is an arithmetic number, because the mean of its divisors is an integer number (253044).

2^1489989 is an apocalyptic number.

It is an amenable number.

1489989 is a deficient number, since it is larger than the sum of its proper divisors (534363).

1489989 is an equidigital number, since it uses as much as digits as its factorization.

1489989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427.

The product of its digits is 186624, while the sum is 48.

The square root of 1489989 is about 1220.6510557895. The cubic root of 1489989 is about 114.2161948482.

The spelling of 1489989 in words is "one million, four hundred eighty-nine thousand, nine hundred eighty-nine".