849001 has 4 divisors (see below), whose sum is σ = 856900. Its totient is φ = 841104.

The previous prime is 848993. The next prime is 849019. The reversal of 849001 is 100948.

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 547600 + 301401 = 740^2 + 549^2 .

It is a cyclic number.

It is not a de Polignac number, because 849001 - 2³ = 848993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849061) 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, 3786 + ... + 4003.

It is an arithmetic number, because the mean of its divisors is an integer number (214225).

2⁸⁴⁹⁰⁰¹ is an apocalyptic number.

It is an amenable number.

849001 is a deficient number, since it is larger than the sum of its proper divisors (7899).

849001 is a wasteful number, since it uses less digits than its factorization.

849001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7898.

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

The square root of 849001 is about 921.4125026284. The cubic root of 849001 is about 94.6896985442.

Adding to 849001 its reverse (100948), we get a palindrome (949949).

The spelling of 849001 in words is "eight hundred forty-nine thousand, one".