8940646433 has 4 divisors (see below), whose sum is σ = 8941001748. Its totient is φ = 8940291120.

The previous prime is 8940646417. The next prime is 8940646531. The reversal of 8940646433 is 3346460498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3346460498 = 2 ⋅1673230249.

It can be written as a sum of positive squares in 2 ways, for example, as 6499100689 + 2441545744 = 80617^2 + 49412^2 .

It is a cyclic number.

It is not a de Polignac number, because 8940646433 - 2⁴ = 8940646417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8940646633) 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, 136778 + ... + 191283.

It is an arithmetic number, because the mean of its divisors is an integer number (2235250437).

Almost surely, 2^8940646433 is an apocalyptic number.

It is an amenable number.

8940646433 is a deficient number, since it is larger than the sum of its proper divisors (355315).

8940646433 is a wasteful number, since it uses less digits than its factorization.

8940646433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355314.

The product of its (nonzero) digits is 1492992, while the sum is 47.

The square root of 8940646433 is about 94554.9915816188. The cubic root of 8940646433 is about 2075.5011269832.

The spelling of 8940646433 in words is "eight billion, nine hundred forty million, six hundred forty-six thousand, four hundred thirty-three".