394786480 has 80 divisors (see below), whose sum is σ = 1008292608. Its totient is φ = 142560000.

The previous prime is 394786423. The next prime is 394786493. The reversal of 394786480 is 84687493.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131395 + ... + 134365.

Almost surely, 2^394786480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394786480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504146304).

394786480 is an abundant number, since it is smaller than the sum of its proper divisors (613506128).

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

394786480 is a wasteful number, since it uses less digits than its factorization.

394786480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146 (or 3140 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 394786480 is about 19869.2345096634. The cubic root of 394786480 is about 733.5911618661.

The spelling of 394786480 in words is "three hundred ninety-four million, seven hundred eighty-six thousand, four hundred eighty".