394663005450 has 144 divisors (see below), whose sum is σ = 1265069655360. Its totient is φ = 90208671840.

The previous prime is 394663005439. The next prime is 394663005467. The reversal of 394663005450 is 54500366493.

394663005450 is a `hidden beast` number, since 3 + 9 + 4 + 6 + 630 + 0 + 5 + 4 + 5 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 394663005396 and 394663005405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2916942 + ... + 3049241.

It is an arithmetic number, because the mean of its divisors is an integer number (8785205940).

Almost surely, 2^394663005450 is an apocalyptic number.

394663005450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

394663005450 is an abundant number, since it is smaller than the sum of its proper divisors (870406649910).

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

394663005450 is a wasteful number, since it uses less digits than its factorization.

394663005450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966218 (or 5966200 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 394663005450 in words is "three hundred ninety-four billion, six hundred sixty-three million, five thousand, four hundred fifty".