394167798 has 24 divisors (see below), whose sum is σ = 854475336. Its totient is φ = 131320800.

The previous prime is 394167793. The next prime is 394167827. The reversal of 394167798 is 897761493.

It is a happy number.

394167798 is a `hidden beast` number, since 394 + 167 + 7 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394167793) 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 11 ways as a sum of consecutive naturals, for example, 39453 + ... + 48423.

It is an arithmetic number, because the mean of its divisors is an integer number (35603139).

Almost surely, 2^394167798 is an apocalyptic number.

394167798 is an abundant number, since it is smaller than the sum of its proper divisors (460307538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394167798 is a wasteful number, since it uses less digits than its factorization.

394167798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11420 (or 11417 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 394167798 is about 19853.6595619045. The cubic root of 394167798 is about 733.2077504420.

The spelling of 394167798 in words is "three hundred ninety-four million, one hundred sixty-seven thousand, seven hundred ninety-eight".