1009822 has 16 divisors (see below), whose sum is σ = 1667952. Its totient is φ = 454720.

The previous prime is 1009819. The next prime is 1009837. The reversal of 1009822 is 2289001.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1009793 and 1009802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4218 + ... + 4450.

It is an arithmetic number, because the mean of its divisors is an integer number (104247).

2^1009822 is an apocalyptic number.

1009822 is a deficient number, since it is larger than the sum of its proper divisors (658130).

1009822 is a wasteful number, since it uses less digits than its factorization.

1009822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1009822 is about 1004.8989999000. The cubic root of 1009822 is about 100.3263339034.

The spelling of 1009822 in words is "one million, nine thousand, eight hundred twenty-two".