1009806 has 16 divisors (see below), whose sum is σ = 2308224. Its totient is φ = 288504.

The previous prime is 1009787. The next prime is 1009807. The reversal of 1009806 is 6089001.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009807) 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 7 ways as a sum of consecutive naturals, for example, 11980 + ... + 12063.

It is an arithmetic number, because the mean of its divisors is an integer number (144264).

2^1009806 is an apocalyptic number.

1009806 is an abundant number, since it is smaller than the sum of its proper divisors (1298418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1009806 is a wasteful number, since it uses less digits than its factorization.

1009806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24055.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1009806 is about 1004.8910388694. The cubic root of 1009806 is about 100.3258040312.

The spelling of 1009806 in words is "one million, nine thousand, eight hundred six".