394091272272 has 20 divisors (see below), whose sum is σ = 1018069120160. Its totient is φ = 131363757408.

The previous prime is 394091272259. The next prime is 394091272301. The reversal of 394091272272 is 272272190493.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 8210234839 = 394091272272 / (3 + 9 + 4 + 0 + 9 + 1 + 2 + 7 + 2 + 2 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105117372 + ... + 4105117467.

It is an arithmetic number, because the mean of its divisors is an integer number (50903456008).

Almost surely, 2^394091272272 is an apocalyptic number.

It is an amenable number.

394091272272 is an abundant number, since it is smaller than the sum of its proper divisors (623977847888).

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

394091272272 is a wasteful number, since it uses less digits than its factorization.

394091272272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210234850 (or 8210234844 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 394091272272 in words is "three hundred ninety-four billion, ninety-one million, two hundred seventy-two thousand, two hundred seventy-two".