393221864697 has 8 divisors (see below), whose sum is σ = 532890833280. Its totient is φ = 257850402960.

The previous prime is 393221864681. The next prime is 393221864753. The reversal of 393221864697 is 796468122393.

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

It is not a de Polignac number, because 393221864697 - 2⁴ = 393221864681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 393221864697.

It is not an unprimeable number, because it can be changed into a prime (393221864617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074376497 + ... + 1074376862.

It is an arithmetic number, because the mean of its divisors is an integer number (66611354160).

Almost surely, 2^393221864697 is an apocalyptic number.

It is an amenable number.

393221864697 is a deficient number, since it is larger than the sum of its proper divisors (139668968583).

393221864697 is a wasteful number, since it uses less digits than its factorization.

393221864697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148753423.

The product of its digits is 23514624, while the sum is 60.

The spelling of 393221864697 in words is "three hundred ninety-three billion, two hundred twenty-one million, eight hundred sixty-four thousand, six hundred ninety-seven".