8494774947 has 12 divisors (see below), whose sum is σ = 12281230000. Its totient is φ = 5658106608.

The previous prime is 8494774919. The next prime is 8494774949. The reversal of 8494774947 is 7494774948.

8494774947 is a `hidden beast` number, since 84 + 9 + 477 + 49 + 47 = 666.

It is not a de Polignac number, because 8494774947 - 2⁷ = 8494774819 is a prime.

It is a super-2 number, since 2×8494774947² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8494774949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 412447 + ... + 432552.

Almost surely, 2^8494774947 is an apocalyptic number.

8494774947 is a deficient number, since it is larger than the sum of its proper divisors (3786455053).

8494774947 is a wasteful number, since it uses less digits than its factorization.

8494774947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846122 (or 846119 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The square root of 8494774947 is about 92167.1033883565. The cubic root of 8494774947 is about 2040.4092914354.

Subtracting from 8494774947 its reverse (7494774948), we obtain a palindrome (999999999).

The spelling of 8494774947 in words is "eight billion, four hundred ninety-four million, seven hundred seventy-four thousand, nine hundred forty-seven".