394098769920 has 288 divisors, whose sum is σ = 1292134304160. Its totient is φ = 102508789760.

The previous prime is 394098769907. The next prime is 394098770003. The reversal of 394098769920 is 29967890493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80606836 + ... + 80611724.

It is an arithmetic number, because the mean of its divisors is an integer number (4486577445).

Almost surely, 2^394098769920 is an apocalyptic number.

394098769920 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 394098769920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646067152080).

394098769920 is an abundant number, since it is smaller than the sum of its proper divisors (898035534240).

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

394098769920 is an frugal number, since it uses more digits than its factorization.

394098769920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972 (or 4940 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 66.

The spelling of 394098769920 in words is "three hundred ninety-four billion, ninety-eight million, seven hundred sixty-nine thousand, nine hundred twenty".