3994042428597 has 16 divisors (see below), whose sum is σ = 5832239273280. Its totient is φ = 2416213410432.

The previous prime is 3994042428569. The next prime is 3994042428601. The reversal of 3994042428597 is 7958242404993.

It is a happy number.

It is not a de Polignac number, because 3994042428597 - 2¹⁵ = 3994042395829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994042428517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867890448 + ... + 867895049.

It is an arithmetic number, because the mean of its divisors is an integer number (364514954580).

Almost surely, 2^{3994042428597} is an apocalyptic number.

It is an amenable number.

3994042428597 is a deficient number, since it is larger than the sum of its proper divisors (1838196844683).

3994042428597 is a wasteful number, since it uses less digits than its factorization.

3994042428597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735785572.

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 3994042428597 in words is "three trillion, nine hundred ninety-four billion, forty-two million, four hundred twenty-eight thousand, five hundred ninety-seven".