394789987493 has 8 divisors (see below), whose sum is σ = 430686852960. Its totient is φ = 358894266480.

The previous prime is 394789987483. The next prime is 394789987507.

394789987493 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 394789987493 - 2²⁶ = 394722878629 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 (394789987453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538523 + ... + 1039031.

It is an arithmetic number, because the mean of its divisors is an integer number (53835856620).

Almost surely, 2^394789987493 is an apocalyptic number.

It is an amenable number.

394789987493 is a deficient number, since it is larger than the sum of its proper divisors (35896865467).

394789987493 is a wasteful number, since it uses less digits than its factorization.

394789987493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572227.

The product of its digits is 2962842624, while the sum is 80.

The spelling of 394789987493 in words is "three hundred ninety-four billion, seven hundred eighty-nine million, nine hundred eighty-seven thousand, four hundred ninety-three".