394104500 has 24 divisors (see below), whose sum is σ = 860725320. Its totient is φ = 157641600.

The previous prime is 394104481. The next prime is 394104509. The reversal of 394104500 is 5401493.

It can be written as a sum of positive squares in 4 ways, for example, as 15335056 + 378769444 = 3916^2 + 19462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 394104500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394104509) 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, 393605 + ... + 394604.

It is an arithmetic number, because the mean of its divisors is an integer number (35863555).

Almost surely, 2^394104500 is an apocalyptic number.

It is an amenable number.

394104500 is an abundant number, since it is smaller than the sum of its proper divisors (466620820).

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

394104500 is a wasteful number, since it uses less digits than its factorization.

394104500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788228 (or 788216 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 394104500 is about 19852.0653837327. The cubic root of 394104500 is about 733.1685006022.

Adding to 394104500 its reverse (5401493), we get a palindrome (399505993).

The spelling of 394104500 in words is "three hundred ninety-four million, one hundred four thousand, five hundred".