394204799040 has 448 divisors, whose sum is σ = 1396309770240. Its totient is φ = 93570785280.

The previous prime is 394204799029. The next prime is 394204799059. The reversal of 394204799040 is 40997402493.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 118770501 + ... + 118773819.

It is an arithmetic number, because the mean of its divisors is an integer number (3116762880).

Almost surely, 2^394204799040 is an apocalyptic number.

394204799040 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 394204799040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698154885120).

394204799040 is an abundant number, since it is smaller than the sum of its proper divisors (1002104971200).

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

394204799040 is a wasteful number, since it uses less digits than its factorization.

394204799040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690 (or 3680 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 394204799040 in words is "three hundred ninety-four billion, two hundred four million, seven hundred ninety-nine thousand, forty".