849217642 has 16 divisors (see below), whose sum is σ = 1567786752. Its totient is φ = 335954160.

The previous prime is 849217613. The next prime is 849217703. The reversal of 849217642 is 246712948.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2332834 + ... + 2333197.

It is an arithmetic number, because the mean of its divisors is an integer number (97986672).

Almost surely, 2^849217642 is an apocalyptic number.

849217642 is a deficient number, since it is larger than the sum of its proper divisors (718569110).

849217642 is a wasteful number, since it uses less digits than its factorization.

849217642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666053.

The product of its digits is 193536, while the sum is 43.

The square root of 849217642 is about 29141.3390563989. The cubic root of 849217642 is about 946.9775193916.

The spelling of 849217642 in words is "eight hundred forty-nine million, two hundred seventeen thousand, six hundred forty-two".