394244928 has 224 divisors, whose sum is σ = 1445483520. Its totient is φ = 102366720.

The previous prime is 394244897. The next prime is 394244987. The reversal of 394244928 is 829442493.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 131575 + ... + 134537.

Almost surely, 2^394244928 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 394244928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722741760).

394244928 is an abundant number, since it is smaller than the sum of its proper divisors (1051238592).

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

394244928 is a wasteful number, since it uses less digits than its factorization.

394244928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002 (or 2986 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 394244928 is about 19855.6019299340. The cubic root of 394244928 is about 733.2555715525.

The spelling of 394244928 in words is "three hundred ninety-four million, two hundred forty-four thousand, nine hundred twenty-eight".