394993056 has 96 divisors (see below), whose sum is σ = 1082930688. Its totient is φ = 125936640.

The previous prime is 394993051. The next prime is 394993063. The reversal of 394993056 is 650399493.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 394992996 and 394993014.

It is not an unprimeable number, because it can be changed into a prime (394993051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215761 + ... + 217583.

It is an arithmetic number, because the mean of its divisors is an integer number (11280528).

Almost surely, 2^394993056 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 394993056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541465344).

394993056 is an abundant number, since it is smaller than the sum of its proper divisors (687937632).

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

394993056 is a wasteful number, since it uses less digits than its factorization.

394993056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1926 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 48.

The square root of 394993056 is about 19874.4322183050. The cubic root of 394993056 is about 733.7190925419.

The spelling of 394993056 in words is "three hundred ninety-four million, nine hundred ninety-three thousand, fifty-six".