394575397297 has 16 divisors (see below), whose sum is σ = 401782187520. Its totient is φ = 387436488192.

The previous prime is 394575397277. The next prime is 394575397309. The reversal of 394575397297 is 792793575493.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 394575397297 - 2³¹ = 392427913649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394575397207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21739008 + ... + 21757150.

It is an arithmetic number, because the mean of its divisors is an integer number (25111386720).

Almost surely, 2^394575397297 is an apocalyptic number.

It is an amenable number.

394575397297 is a deficient number, since it is larger than the sum of its proper divisors (7206790223).

394575397297 is a wasteful number, since it uses less digits than its factorization.

394575397297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19992.

The product of its digits is 450084600, while the sum is 70.

The spelling of 394575397297 in words is "three hundred ninety-four billion, five hundred seventy-five million, three hundred ninety-seven thousand, two hundred ninety-seven".