849845091 has 8 divisors (see below), whose sum is σ = 1192765120. Its totient is φ = 536744232.

The previous prime is 849845083. The next prime is 849845111. The reversal of 849845091 is 190548948.

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

It is not a de Polignac number, because 849845091 - 2³ = 849845083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 849845091.

It is not an unprimeable number, because it can be changed into a prime (849845021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7454725 + ... + 7454838.

It is an arithmetic number, because the mean of its divisors is an integer number (149095640).

Almost surely, 2^849845091 is an apocalyptic number.

849845091 is a deficient number, since it is larger than the sum of its proper divisors (342920029).

849845091 is a wasteful number, since it uses less digits than its factorization.

849845091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14909585.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 849845091 is about 29152.1026857412. The cubic root of 849845091 is about 947.2106884445.

The spelling of 849845091 in words is "eight hundred forty-nine million, eight hundred forty-five thousand, ninety-one".