849064321 has 16 divisors (see below), whose sum is σ = 981844864. Its totient is φ = 719207424.

The previous prime is 849064273. The next prime is 849064327. The reversal of 849064321 is 123460948.

It is a 2-Lehmer number, since φ(849064321) divides (849064321-1)².

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 849064321 - 2²⁷ = 714846593 is a prime.

It is a deceptive number, since it divides R_849064320.

It is not an unprimeable number, because it can be changed into a prime (849064327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210106 + ... + 214108.

It is an arithmetic number, because the mean of its divisors is an integer number (61365304).

It is a Poulet number, since it divides 2^849064320-1.

Almost surely, 2^849064321 is an apocalyptic number.

It is an amenable number.

849064321 is a deficient number, since it is larger than the sum of its proper divisors (132780543).

849064321 is a wasteful number, since it uses less digits than its factorization.

849064321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 849064321 is about 29138.7082932652. The cubic root of 849064321 is about 946.9205256475.

The spelling of 849064321 in words is "eight hundred forty-nine million, sixty-four thousand, three hundred twenty-one".