393612968391 has 32 divisors (see below), whose sum is σ = 575518556160. Its totient is φ = 238179454464.

The previous prime is 393612968389. The next prime is 393612968453. The reversal of 393612968391 is 193869216393.

It is not a de Polignac number, because 393612968391 - 2¹ = 393612968389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393612968351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1122186 + ... + 1430568.

It is an arithmetic number, because the mean of its divisors is an integer number (17984954880).

Almost surely, 2^393612968391 is an apocalyptic number.

393612968391 is a deficient number, since it is larger than the sum of its proper divisors (181905587769).

393612968391 is a wasteful number, since it uses less digits than its factorization.

393612968391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309295.

The product of its digits is 11337408, while the sum is 60.

The spelling of 393612968391 in words is "three hundred ninety-three billion, six hundred twelve million, nine hundred sixty-eight thousand, three hundred ninety-one".