394748204400 has 360 divisors, whose sum is σ = 1529181578496. Its totient is φ = 93470630400.

The previous prime is 394748204359. The next prime is 394748204483. The reversal of 394748204400 is 4402847493.

394748204400 is a `hidden beast` number, since 39 + 4 + 7 + 4 + 8 + 204 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×394748204400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1586889 + ... + 1818711.

Almost surely, 2^394748204400 is an apocalyptic number.

394748204400 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 394748204400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764590789248).

394748204400 is an abundant number, since it is smaller than the sum of its proper divisors (1134433374096).

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

394748204400 is a wasteful number, since it uses less digits than its factorization.

394748204400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231901 (or 231887 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 394748204400 in words is "three hundred ninety-four billion, seven hundred forty-eight million, two hundred four thousand, four hundred".