849644 has 6 divisors (see below), whose sum is σ = 1486884. Its totient is φ = 424820.

The previous prime is 849601. The next prime is 849649. The reversal of 849644 is 446948.

849644 = T₂₅₄ + T₂₅₅ + ... + T₂₇₇.

It is not an unprimeable number, because it can be changed into a prime (849649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106202 + ... + 106209.

It is an arithmetic number, because the mean of its divisors is an integer number (247814).

2⁸⁴⁹⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

849644 is a deficient number, since it is larger than the sum of its proper divisors (637240).

849644 is a wasteful number, since it uses less digits than its factorization.

849644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212415 (or 212413 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 849644 is about 921.7613574022. The cubic root of 849644 is about 94.7135972644.

The spelling of 849644 in words is "eight hundred forty-nine thousand, six hundred forty-four".