394686432 has 168 divisors, whose sum is σ = 1332008496. Its totient is φ = 112720896.

The previous prime is 394686403. The next prime is 394686499. The reversal of 394686432 is 234686493.

It is a tau number, because it is divible by the number of its divisors (168).

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 polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 162088 + ... + 164504.

It is an arithmetic number, because the mean of its divisors is an integer number (7928622).

Almost surely, 2^394686432 is an apocalyptic number.

394686432 is a gapful number since it is divisible by the number (32) 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 394686432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666004248).

394686432 is an abundant number, since it is smaller than the sum of its proper divisors (937322064).

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

394686432 is an equidigital number, since it uses as much as digits as its factorization.

394686432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2429 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 394686432 is about 19866.7166889751. The cubic root of 394686432 is about 733.5291869902.

The spelling of 394686432 in words is "three hundred ninety-four million, six hundred eighty-six thousand, four hundred thirty-two".