394220412761 has 8 divisors (see below), whose sum is σ = 454748247360. Its totient is φ = 334745236368.

The previous prime is 394220412683. The next prime is 394220412793. The reversal of 394220412761 is 167214022493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394220412761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394220412461) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 263163746 + ... + 263165243.

It is an arithmetic number, because the mean of its divisors is an integer number (56843530920).

Almost surely, 2^394220412761 is an apocalyptic number.

It is an amenable number.

394220412761 is a deficient number, since it is larger than the sum of its proper divisors (60527834599).

394220412761 is a wasteful number, since it uses less digits than its factorization.

394220412761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526329103.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 394220412761 in words is "three hundred ninety-four billion, two hundred twenty million, four hundred twelve thousand, seven hundred sixty-one".