8446354993 has 4 divisors (see below), whose sum is σ = 8446657828. Its totient is φ = 8446052160.

The previous prime is 8446354957. The next prime is 8446355003. The reversal of 8446354993 is 3994536448.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4748863744 + 3697491249 = 68912^2 + 60807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8446354993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8446354093) 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, 104796 + ... + 166957.

It is an arithmetic number, because the mean of its divisors is an integer number (2111664457).

Almost surely, 2^8446354993 is an apocalyptic number.

It is an amenable number.

8446354993 is a deficient number, since it is larger than the sum of its proper divisors (302835).

8446354993 is a wasteful number, since it uses less digits than its factorization.

8446354993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302834.

The product of its digits is 11197440, while the sum is 55.

The square root of 8446354993 is about 91904.0531913582. The cubic root of 8446354993 is about 2036.5251456433.

The spelling of 8446354993 in words is "eight billion, four hundred forty-six million, three hundred fifty-four thousand, nine hundred ninety-three".