1530989 has 4 divisors (see below), whose sum is σ = 1541280. Its totient is φ = 1520700.

The previous prime is 1530967. The next prime is 1531021. The reversal of 1530989 is 9890351.

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 a cyclic number.

It is not a de Polignac number, because 1530989 - 2²⁰ = 482413 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530589) 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, 4919 + ... + 5220.

It is an arithmetic number, because the mean of its divisors is an integer number (385320).

2^1530989 is an apocalyptic number.

It is an amenable number.

1530989 is a deficient number, since it is larger than the sum of its proper divisors (10291).

1530989 is a wasteful number, since it uses less digits than its factorization.

1530989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1530989 is about 1237.3314026565. The cubic root of 1530989 is about 115.2543582280.

The spelling of 1530989 in words is "one million, five hundred thirty thousand, nine hundred eighty-nine".