1992589 has 2 divisors, whose sum is σ = 1992590. Its totient is φ = 1992588.

The previous prime is 1992583. The next prime is 1992611. The reversal of 1992589 is 9852991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1988100 + 4489 = 1410^2 + 67^2 .

It is an emirp because it is prime and its reverse (9852991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1992589 - 2¹³ = 1984397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992583) 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 as a sum of consecutive naturals, namely, 996294 + 996295.

It is an arithmetic number, because the mean of its divisors is an integer number (996295).

2^1992589 is an apocalyptic number.

It is an amenable number.

1992589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992589 is an equidigital number, since it uses as much as digits as its factorization.

1992589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 43.

The square root of 1992589 is about 1411.5909464147. The cubic root of 1992589 is about 125.8362911263.

The spelling of 1992589 in words is "one million, nine hundred ninety-two thousand, five hundred eighty-nine".