4418994393 has 64 divisors (see below), whose sum is σ = 7709644800. Its totient is φ = 2473289280.

The previous prime is 4418994389. The next prime is 4418994401. The reversal of 4418994393 is 3934998144.

4418994393 is a `hidden beast` number, since 441 + 89 + 94 + 39 + 3 = 666.

It is not a de Polignac number, because 4418994393 - 2² = 4418994389 is a prime.

It is a super-2 number, since 2×4418994393² = 39055022890730876898, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4418994383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 186946 + ... + 209252.

It is an arithmetic number, because the mean of its divisors is an integer number (120463200).

Almost surely, 2^4418994393 is an apocalyptic number.

It is an amenable number.

4418994393 is a deficient number, since it is larger than the sum of its proper divisors (3290650407).

4418994393 is a wasteful number, since it uses less digits than its factorization.

4418994393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22379 (or 22373 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 4418994393 is about 66475.5172450730. The cubic root of 4418994393 is about 1640.9971123812.

The spelling of 4418994393 in words is "four billion, four hundred eighteen million, nine hundred ninety-four thousand, three hundred ninety-three".