394149326340 has 192 divisors, whose sum is σ = 1376305717248. Its totient is φ = 81879360000.

The previous prime is 394149326339. The next prime is 394149326371. The reversal of 394149326340 is 43623941493.

It is a self number, because there is not a number n which added to its sum of digits gives 394149326340.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 21940642 + ... + 21958598.

It is an arithmetic number, because the mean of its divisors is an integer number (7168258944).

Almost surely, 2^394149326340 is an apocalyptic number.

394149326340 is a gapful number since it is divisible by the number (30) 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 394149326340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688152858624).

394149326340 is an abundant number, since it is smaller than the sum of its proper divisors (982156390908).

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

394149326340 is a wasteful number, since it uses less digits than its factorization.

394149326340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22738 (or 22736 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 48.

The spelling of 394149326340 in words is "three hundred ninety-four billion, one hundred forty-nine million, three hundred twenty-six thousand, three hundred forty".