394147907343 has 24 divisors (see below), whose sum is σ = 577185240320. Its totient is φ = 259144900560.

The previous prime is 394147907339. The next prime is 394147907353. The reversal of 394147907343 is 343709741493.

394147907343 is a `hidden beast` number, since 39 + 414 + 7 + 90 + 73 + 43 = 666.

It is a Cunningham number, because it is equal to 627812²-1.

It is not a de Polignac number, because 394147907343 - 2² = 394147907339 is a prime.

It is a super-2 number, since 2×394147907343² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394147907343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394147907333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313908 + ... + 941718.

Almost surely, 2^394147907343 is an apocalyptic number.

394147907343 is a deficient number, since it is larger than the sum of its proper divisors (183037332977).

394147907343 is a wasteful number, since it uses less digits than its factorization.

394147907343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628779 (or 628776 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 394147907343 in words is "three hundred ninety-four billion, one hundred forty-seven million, nine hundred seven thousand, three hundred forty-three".