394638048 has 192 divisors, whose sum is σ = 1373137920. Its totient is φ = 107813376.

The previous prime is 394638019. The next prime is 394638067. The reversal of 394638048 is 840836493.

394638048 is a `hidden beast` number, since 3 + 9 + 4 + 638 + 0 + 4 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 394637994 and 394638012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137686 + ... + 140522.

It is an arithmetic number, because the mean of its divisors is an integer number (7151760).

Almost surely, 2^394638048 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 394638048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686568960).

394638048 is an abundant number, since it is smaller than the sum of its proper divisors (978499872).

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

394638048 is a wasteful number, since it uses less digits than its factorization.

394638048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886 (or 2872 counting only the distinct ones).

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

The square root of 394638048 is about 19865.4989365986. The cubic root of 394638048 is about 733.4992116953.

The spelling of 394638048 in words is "three hundred ninety-four million, six hundred thirty-eight thousand, forty-eight".