394957666759493 has 8 divisors (see below), whose sum is σ = 418192353971712. Its totient is φ = 371723188801216.

The previous prime is 394957666759471. The next prime is 394957666759501.

394957666759493 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 394957666759493 - 2⁶ = 394957666759429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394957666759463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48419255 + ... + 55985172.

It is an arithmetic number, because the mean of its divisors is an integer number (52274044246464).

Almost surely, 2^{394957666759493} is an apocalyptic number.

It is an amenable number.

394957666759493 is a deficient number, since it is larger than the sum of its proper divisors (23234687212219).

394957666759493 is a wasteful number, since it uses less digits than its factorization.

394957666759493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104626971.

The product of its digits is 249989846400, while the sum is 92.

The spelling of 394957666759493 in words is "three hundred ninety-four trillion, nine hundred fifty-seven billion, six hundred sixty-six million, seven hundred fifty-nine thousand, four hundred ninety-three".