1023289 has 2 divisors, whose sum is σ = 1023290. Its totient is φ = 1023288.

The previous prime is 1023277. The next prime is 1023299. The reversal of 1023289 is 9823201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016064 + 7225 = 1008^2 + 85^2 .

It is an emirp because it is prime and its reverse (9823201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023289 - 2⁵ = 1023257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023229) 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, 511644 + 511645.

It is an arithmetic number, because the mean of its divisors is an integer number (511645).

2^1023289 is an apocalyptic number.

It is an amenable number.

1023289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023289 is an equidigital number, since it uses as much as digits as its factorization.

1023289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1023289 is about 1011.5774809672. The cubic root of 1023289 is about 100.7703503646.

The spelling of 1023289 in words is "one million, twenty-three thousand, two hundred eighty-nine".