84749191 has 8 divisors (see below), whose sum is σ = 87032624. Its totient is φ = 82494720.

The previous prime is 84749179. The next prime is 84749207. The reversal of 84749191 is 19194748.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84749191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84749111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245 + ... + 13078.

It is an arithmetic number, because the mean of its divisors is an integer number (10879078).

Almost surely, 2^84749191 is an apocalyptic number.

84749191 is a deficient number, since it is larger than the sum of its proper divisors (2283433).

84749191 is a wasteful number, since it uses less digits than its factorization.

84749191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14481.

The product of its digits is 72576, while the sum is 43.

The square root of 84749191 is about 9205.9323808075. The cubic root of 84749191 is about 439.2500845198.

The spelling of 84749191 in words is "eighty-four million, seven hundred forty-nine thousand, one hundred ninety-one".