9539432473 has 2 divisors, whose sum is σ = 9539432474. Its totient is φ = 9539432472.

The previous prime is 9539432471. The next prime is 9539432531. The reversal of 9539432473 is 3742349359.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8874205209 + 665227264 = 94203^2 + 25792^2 .

It is a cyclic number.

It is not a de Polignac number, because 9539432473 - 2¹ = 9539432471 is a prime.

Together with 9539432471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9539432471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4769716236 + 4769716237.

It is an arithmetic number, because the mean of its divisors is an integer number (4769716237).

Almost surely, 2^9539432473 is an apocalyptic number.

It is an amenable number.

9539432473 is a deficient number, since it is larger than the sum of its proper divisors (1).

9539432473 is an equidigital number, since it uses as much as digits as its factorization.

9539432473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 49.

The square root of 9539432473 is about 97670.0182911829. The cubic root of 9539432473 is about 2120.8380803728.

The spelling of 9539432473 in words is "nine billion, five hundred thirty-nine million, four hundred thirty-two thousand, four hundred seventy-three".