394948656 has 80 divisors (see below), whose sum is σ = 1164335200. Its totient is φ = 128086272.

The previous prime is 394948639. The next prime is 394948657. The reversal of 394948656 is 656849493.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (394948657) 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, 3630 + ... + 28338.

It is an arithmetic number, because the mean of its divisors is an integer number (14554190).

Almost surely, 2^394948656 is an apocalyptic number.

394948656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394948656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582167600).

394948656 is an abundant number, since it is smaller than the sum of its proper divisors (769386544).

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

394948656 is a wasteful number, since it uses less digits than its factorization.

394948656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24763 (or 24751 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 394948656 is about 19873.3151738707. The cubic root of 394948656 is about 733.6915997815.

The spelling of 394948656 in words is "three hundred ninety-four million, nine hundred forty-eight thousand, six hundred fifty-six".