6849212291 has 4 divisors (see below), whose sum is σ = 6855668784. Its totient is φ = 6842755800.

The previous prime is 6849212281. The next prime is 6849212299. The reversal of 6849212291 is 1922129486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6849212291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6849212299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3226655 + ... + 3228776.

It is an arithmetic number, because the mean of its divisors is an integer number (1713917196).

Almost surely, 2^6849212291 is an apocalyptic number.

6849212291 is a deficient number, since it is larger than the sum of its proper divisors (6456493).

6849212291 is a wasteful number, since it uses less digits than its factorization.

6849212291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456492.

The product of its digits is 124416, while the sum is 44.

The square root of 6849212291 is about 82759.9679253200. The cubic root of 6849212291 is about 1899.0958108641.

The spelling of 6849212291 in words is "six billion, eight hundred forty-nine million, two hundred twelve thousand, two hundred ninety-one".