4394140853893 has 24 divisors (see below), whose sum is σ = 5175252099360. Its totient is φ = 3719506361760.

The previous prime is 4394140853873. The next prime is 4394140853909. The reversal of 4394140853893 is 3983580414934.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4394140853893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394140853833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9781063 + ... + 10220443.

It is an arithmetic number, because the mean of its divisors is an integer number (215635504140).

Almost surely, 2^{4394140853893} is an apocalyptic number.

It is an amenable number.

4394140853893 is a deficient number, since it is larger than the sum of its proper divisors (781111245467).

4394140853893 is a wasteful number, since it uses less digits than its factorization.

4394140853893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441937 (or 441930 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 61.

The spelling of 4394140853893 in words is "four trillion, three hundred ninety-four billion, one hundred forty million, eight hundred fifty-three thousand, eight hundred ninety-three".