1000849 has 2 divisors, whose sum is σ = 1000850.
Its totient is φ = 1000848.
The previous prime is 1000847. The next prime is 1000859. The reversal of 1000849 is 9480001.
1000849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 846400 + 154449 = 920^2 + 393^2
It is an emirp because it is prime and its reverse (9480001) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1000849 - 21 = 1000847 is a prime.
Together with 1000847, it forms a pair of twin primes.
1000849 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (1000847) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500424 + 500425.
It is an arithmetic number, because the mean of its divisors is an integer number (500425).
21000849 is an apocalyptic number.
It is an amenable number.
1000849 is a deficient number, since it is larger than the sum of its proper divisors (1).
1000849 is an equidigital number, since it uses as much as digits as its factorization.
1000849 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 288, while the sum is 22.
The square root of 1000849 is about 1000.4244099381.
The cubic root of 1000849 is about 100.0282919949.
It can be divided in two parts, 1000 and 849, that added together give a square (1849 = 432).
The spelling of 1000849 in words is "one million, eight hundred forty-nine", and thus it is an aban number.