394320747966 has 32 divisors (see below), whose sum is σ = 801554652288. Its totient is φ = 129293656800.

The previous prime is 394320747917. The next prime is 394320747971. The reversal of 394320747966 is 669747023493.

It is a happy number.

It is a Curzon number.

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, 417840 + ... + 981443.

It is an arithmetic number, because the mean of its divisors is an integer number (25048582884).

Almost surely, 2^394320747966 is an apocalyptic number.

394320747966 is an abundant number, since it is smaller than the sum of its proper divisors (407233904322).

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

394320747966 is a wasteful number, since it uses less digits than its factorization.

394320747966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400056.

The product of its (nonzero) digits is 41150592, while the sum is 60.

The spelling of 394320747966 in words is "three hundred ninety-four billion, three hundred twenty million, seven hundred forty-seven thousand, nine hundred sixty-six".