394597745443 has 4 divisors (see below), whose sum is σ = 430470267768. Its totient is φ = 358725223120.

The previous prime is 394597745419. The next prime is 394597745453. The reversal of 394597745443 is 344547795493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344547795493 = 11 ⋅31322526863.

It is a de Polignac number, because none of the positive numbers 2^k-394597745443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394597745413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17936261146 + ... + 17936261167.

It is an arithmetic number, because the mean of its divisors is an integer number (107617566942).

Almost surely, 2^394597745443 is an apocalyptic number.

394597745443 is a deficient number, since it is larger than the sum of its proper divisors (35872522325).

394597745443 is a wasteful number, since it uses less digits than its factorization.

394597745443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35872522324.

The product of its digits is 228614400, while the sum is 64.

The spelling of 394597745443 in words is "three hundred ninety-four billion, five hundred ninety-seven million, seven hundred forty-five thousand, four hundred forty-three".