1022489 has 4 divisors (see below), whose sum is σ = 1101156. Its totient is φ = 943824.

The previous prime is 1022467. The next prime is 1022491. The reversal of 1022489 is 9842201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 577600 + 444889 = 760^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022489 - 2¹⁶ = 956953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022429) 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 3 ways as a sum of consecutive naturals, for example, 39314 + ... + 39339.

It is an arithmetic number, because the mean of its divisors is an integer number (275289).

2^1022489 is an apocalyptic number.

It is an amenable number.

1022489 is a deficient number, since it is larger than the sum of its proper divisors (78667).

1022489 is an equidigital number, since it uses as much as digits as its factorization.

1022489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78666.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1022489 is about 1011.1819816433. The cubic root of 1022489 is about 100.7440830058.

The spelling of 1022489 in words is "one million, twenty-two thousand, four hundred eighty-nine".