849217647 has 8 divisors (see below), whose sum is σ = 1133975344. Its totient is φ = 565302528.

The previous prime is 849217613. The next prime is 849217703. The reversal of 849217647 is 746712948.

849217647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 849217647 - 2¹⁴ = 849201263 is a prime.

It is a super-2 number, since 2×849217647² = 1442341223952433218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849217596 and 849217605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849210647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208288 + ... + 212325.

It is an arithmetic number, because the mean of its divisors is an integer number (141746918).

Almost surely, 2^849217647 is an apocalyptic number.

849217647 is a deficient number, since it is larger than the sum of its proper divisors (284757697).

849217647 is a wasteful number, since it uses less digits than its factorization.

849217647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421289.

The product of its digits is 677376, while the sum is 48.

The square root of 849217647 is about 29141.3391421877. The cubic root of 849217647 is about 946.9775212501.

The spelling of 849217647 in words is "eight hundred forty-nine million, two hundred seventeen thousand, six hundred forty-seven".