1589491 has 4 divisors (see below), whose sum is σ = 1592032. Its totient is φ = 1586952.

The previous prime is 1589473. The next prime is 1589501. The reversal of 1589491 is 1949851.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1949851 = 211 ⋅9241.

It is a cyclic number.

It is not a de Polignac number, because 1589491 - 2⁵ = 1589459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1589491.

It is not an unprimeable number, because it can be changed into a prime (1589411) 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, 406 + ... + 1828.

It is an arithmetic number, because the mean of its divisors is an integer number (398008).

2^1589491 is an apocalyptic number.

1589491 is a deficient number, since it is larger than the sum of its proper divisors (2541).

1589491 is a wasteful number, since it uses less digits than its factorization.

1589491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its digits is 12960, while the sum is 37.

The square root of 1589491 is about 1260.7501735078. The cubic root of 1589491 is about 116.7040759852.

It can be divided in two parts, 1589 and 491, that added together give a triangular number (2080 = T₆₄).

The spelling of 1589491 in words is "one million, five hundred eighty-nine thousand, four hundred ninety-one".