394894368 has 144 divisors (see below), whose sum is σ = 1264902912. Its totient is φ = 115776000.

The previous prime is 394894351. The next prime is 394894373. The reversal of 394894368 is 863498493.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×394894368³ (a number of 27 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96198 + ... + 100218.

It is an arithmetic number, because the mean of its divisors is an integer number (8784048).

Almost surely, 2^394894368 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 394894368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632451456).

394894368 is an abundant number, since it is smaller than the sum of its proper divisors (870008544).

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

394894368 is a wasteful number, since it uses less digits than its factorization.

394894368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079 (or 4068 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 394894368 is about 19871.9492752976. The cubic root of 394894368 is about 733.6579815089.

The spelling of 394894368 in words is "three hundred ninety-four million, eight hundred ninety-four thousand, three hundred sixty-eight".