849449944949 has 16 divisors (see below), whose sum is σ = 859568371200. Its totient is φ = 839376091584.

The previous prime is 849449944943. The next prime is 849449944961. The reversal of 849449944949 is 949449944948.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 849449944949 - 2⁴ = 849449944933 is a prime.

It is a super-2 number, since 2×849449944949² (a number of 25 digits) contains 22 as substring.

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 849449944949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849449944943) 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, 104261294 + ... + 104269440.

It is an arithmetic number, because the mean of its divisors is an integer number (53723023200).

Almost surely, 2^849449944949 is an apocalyptic number.

It is an amenable number.

849449944949 is a deficient number, since it is larger than the sum of its proper divisors (10118426251).

849449944949 is a wasteful number, since it uses less digits than its factorization.

849449944949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10732.

The product of its digits is 1934917632, while the sum is 77.

Subtracting 849449944949 from its reverse (949449944948), we obtain a palindrome (99999999999).

The spelling of 849449944949 in words is "eight hundred forty-nine billion, four hundred forty-nine million, nine hundred forty-four thousand, nine hundred forty-nine".