394068742287 has 8 divisors (see below), whose sum is σ = 573190897920. Its totient is φ = 238829540760.

The previous prime is 394068742283. The next prime is 394068742357. The reversal of 394068742287 is 782247860493.

It is a happy number.

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

It is not a de Polignac number, because 394068742287 - 2² = 394068742283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394068742287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394068742283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5970738487 + ... + 5970738552.

It is an arithmetic number, because the mean of its divisors is an integer number (71648862240).

Almost surely, 2^394068742287 is an apocalyptic number.

394068742287 is a deficient number, since it is larger than the sum of its proper divisors (179122155633).

394068742287 is a wasteful number, since it uses less digits than its factorization.

394068742287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941477053.

The product of its (nonzero) digits is 32514048, while the sum is 60.

The spelling of 394068742287 in words is "three hundred ninety-four billion, sixty-eight million, seven hundred forty-two thousand, two hundred eighty-seven".