849820169 has 8 divisors (see below), whose sum is σ = 967384512. Its totient is φ = 738973840.

The previous prime is 849820117. The next prime is 849820183. The reversal of 849820169 is 961028948.

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

It is not a de Polignac number, because 849820169 - 2²⁰ = 848771593 is a prime.

It is a super-2 number, since 2×849820169² = 1444388639278377122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (849820189) 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, 1679234 + ... + 1679739.

It is an arithmetic number, because the mean of its divisors is an integer number (120923064).

Almost surely, 2^849820169 is an apocalyptic number.

It is an amenable number.

849820169 is a deficient number, since it is larger than the sum of its proper divisors (117564343).

849820169 is a wasteful number, since it uses less digits than its factorization.

849820169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359007.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 849820169 is about 29151.6752348814. The cubic root of 849820169 is about 947.2014292608.

The spelling of 849820169 in words is "eight hundred forty-nine million, eight hundred twenty thousand, one hundred sixty-nine".