849464947 has 4 divisors (see below), whose sum is σ = 852599776. Its totient is φ = 846330120.

The previous prime is 849464921. The next prime is 849464951. The reversal of 849464947 is 749464948.

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

It is a cyclic number.

It is not a de Polignac number, because 849464947 - 2²⁷ = 715247219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849464047) 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, 1567008 + ... + 1567549.

It is an arithmetic number, because the mean of its divisors is an integer number (213149944).

Almost surely, 2^849464947 is an apocalyptic number.

849464947 is a deficient number, since it is larger than the sum of its proper divisors (3134829).

849464947 is a wasteful number, since it uses less digits than its factorization.

849464947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134828.

The product of its digits is 6967296, while the sum is 55.

The square root of 849464947 is about 29145.5819464975. The cubic root of 849464947 is about 947.0694351872.

Subtracting from 849464947 its reverse (749464948), we obtain a palindrome (99999999).

It can be divided in two parts, 8494 and 64947, that added together give a square (73441 = 271²).

The spelling of 849464947 in words is "eight hundred forty-nine million, four hundred sixty-four thousand, nine hundred forty-seven".