1009873 has 2 divisors, whose sum is σ = 1009874. Its totient is φ = 1009872.

The previous prime is 1009859. The next prime is 1009901. The reversal of 1009873 is 3789001.

It is an a-pointer prime, because the next prime (1009901) can be obtained adding 1009873 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859329 + 150544 = 927^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009873 - 2⁹ = 1009361 is a prime.

It is a super-2 number, since 2×1009873² = 2039686952258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1009843) 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 as a sum of consecutive naturals, namely, 504936 + 504937.

It is an arithmetic number, because the mean of its divisors is an integer number (504937).

2^1009873 is an apocalyptic number.

It is an amenable number.

1009873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009873 is an equidigital number, since it uses as much as digits as its factorization.

1009873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1009873 is about 1004.9243752641. The cubic root of 1009873 is about 100.3280228337.

The spelling of 1009873 in words is "one million, nine thousand, eight hundred seventy-three".