847994473 has 2 divisors, whose sum is σ = 847994474. Its totient is φ = 847994472.

The previous prime is 847994417. The next prime is 847994503. The reversal of 847994473 is 374499748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 827310169 + 20684304 = 28763^2 + 4548^2 .

It is a cyclic number.

It is not a de Polignac number, because 847994473 - 2¹³ = 847986281 is a prime.

It is not a weakly prime, because it can be changed into another prime (847994573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423997236 + 423997237.

It is an arithmetic number, because the mean of its divisors is an integer number (423997237).

Almost surely, 2^847994473 is an apocalyptic number.

It is an amenable number.

847994473 is a deficient number, since it is larger than the sum of its proper divisors (1).

847994473 is an equidigital number, since it uses as much as digits as its factorization.

847994473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The square root of 847994473 is about 29120.3446579878. The cubic root of 847994473 is about 946.5226418438.

The spelling of 847994473 in words is "eight hundred forty-seven million, nine hundred ninety-four thousand, four hundred seventy-three".