394450839420 has 48 divisors (see below), whose sum is σ = 1204868020608. Its totient is φ = 95624445760.

The previous prime is 394450839353. The next prime is 394450839473. The reversal of 394450839420 is 24938054493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298825734 + ... + 298827053.

It is an arithmetic number, because the mean of its divisors is an integer number (25101417096).

Almost surely, 2^394450839420 is an apocalyptic number.

394450839420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394450839420 is an abundant number, since it is smaller than the sum of its proper divisors (810417181188).

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

394450839420 is a wasteful number, since it uses less digits than its factorization.

394450839420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597652810 (or 597652808 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 394450839420 in words is "three hundred ninety-four billion, four hundred fifty million, eight hundred thirty-nine thousand, four hundred twenty".