849968947 has 4 divisors (see below), whose sum is σ = 850427536. Its totient is φ = 849510360.

The previous prime is 849968939. The next prime is 849968953. The reversal of 849968947 is 749869948.

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 849968947 - 2³ = 849968939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849962947) 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, 226503 + ... + 230224.

It is an arithmetic number, because the mean of its divisors is an integer number (212606884).

Almost surely, 2^849968947 is an apocalyptic number.

849968947 is a deficient number, since it is larger than the sum of its proper divisors (458589).

849968947 is a wasteful number, since it uses less digits than its factorization.

849968947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458588.

The product of its digits is 31352832, while the sum is 64.

The square root of 849968947 is about 29154.2269148060. The cubic root of 849968947 is about 947.2567015472.

The spelling of 849968947 in words is "eight hundred forty-nine million, nine hundred sixty-eight thousand, nine hundred forty-seven".