394599061920 has 576 divisors, whose sum is σ = 1536178089600. Its totient is φ = 84652646400.

The previous prime is 394599061847. The next prime is 394599061937. The reversal of 394599061920 is 29160995493.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48705870 + ... + 48713970.

It is an arithmetic number, because the mean of its divisors is an integer number (2666975850).

Almost surely, 2^394599061920 is an apocalyptic number.

394599061920 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 394599061920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768089044800).

394599061920 is an abundant number, since it is smaller than the sum of its proper divisors (1141579027680).

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

394599061920 is a wasteful number, since it uses less digits than its factorization.

394599061920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8261 (or 8246 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 57.

The spelling of 394599061920 in words is "three hundred ninety-four billion, five hundred ninety-nine million, sixty-one thousand, nine hundred twenty".