8495221393 has 2 divisors, whose sum is σ = 8495221394. Its totient is φ = 8495221392.

The previous prime is 8495221391. The next prime is 8495221411. The reversal of 8495221393 is 3931225948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7940948544 + 554272849 = 89112^2 + 23543^2 .

It is a cyclic number.

It is not a de Polignac number, because 8495221393 - 2¹ = 8495221391 is a prime.

Together with 8495221391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8495221391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4247610696 + 4247610697.

It is an arithmetic number, because the mean of its divisors is an integer number (4247610697).

Almost surely, 2^8495221393 is an apocalyptic number.

It is an amenable number.

8495221393 is a deficient number, since it is larger than the sum of its proper divisors (1).

8495221393 is an equidigital number, since it uses as much as digits as its factorization.

8495221393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 8495221393 is about 92169.5252944269. The cubic root of 8495221393 is about 2040.4450356277.

The spelling of 8495221393 in words is "eight billion, four hundred ninety-five million, two hundred twenty-one thousand, three hundred ninety-three".