394229977371 has 16 divisors (see below), whose sum is σ = 592761494400. Its totient is φ = 258897297384.

The previous prime is 394229977369. The next prime is 394229977417. The reversal of 394229977371 is 173779922493.

394229977371 is a `hidden beast` number, since 3 + 94 + 22 + 99 + 77 + 371 = 666.

It is not a de Polignac number, because 394229977371 - 2¹ = 394229977369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394229977299 and 394229977308.

It is not an unprimeable number, because it can be changed into a prime (394229975371) 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 15 ways as a sum of consecutive naturals, for example, 108961701 + ... + 108965318.

It is an arithmetic number, because the mean of its divisors is an integer number (37047593400).

Almost surely, 2^394229977371 is an apocalyptic number.

394229977371 is a deficient number, since it is larger than the sum of its proper divisors (198531517029).

394229977371 is a wasteful number, since it uses less digits than its factorization.

394229977371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217927095 (or 217927089 counting only the distinct ones).

The product of its digits is 36006768, while the sum is 63.

The spelling of 394229977371 in words is "three hundred ninety-four billion, two hundred twenty-nine million, nine hundred seventy-seven thousand, three hundred seventy-one".