394935786 has 72 divisors (see below), whose sum is σ = 1047833280. Its totient is φ = 106895376.

The previous prime is 394935781. The next prime is 394935799. The reversal of 394935786 is 687539493.

It is not an unprimeable number, because it can be changed into a prime (394935781) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 4975 + ... + 28541.

It is an arithmetic number, because the mean of its divisors is an integer number (14553240).

Almost surely, 2^394935786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394935786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523916640).

394935786 is an abundant number, since it is smaller than the sum of its proper divisors (652897494).

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

394935786 is a wasteful number, since it uses less digits than its factorization.

394935786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23608 (or 23598 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 394935786 is about 19872.9913701989. The cubic root of 394935786 is about 733.6836302110.

The spelling of 394935786 in words is "three hundred ninety-four million, nine hundred thirty-five thousand, seven hundred eighty-six".