393809380939 has 8 divisors (see below), whose sum is σ = 424108679120. Its totient is φ = 363510978336.

The previous prime is 393809380933. The next prime is 393809380981. The reversal of 393809380939 is 939083908393.

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

It is a cyclic number.

It is not a de Polignac number, because 393809380939 - 2⁵ = 393809380907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393809380933) 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, 897409 + ... + 1262125.

It is an arithmetic number, because the mean of its divisors is an integer number (53013584890).

Almost surely, 2^393809380939 is an apocalyptic number.

393809380939 is a deficient number, since it is larger than the sum of its proper divisors (30299298181).

393809380939 is a wasteful number, since it uses less digits than its factorization.

393809380939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447789.

The product of its (nonzero) digits is 34012224, while the sum is 64.

The spelling of 393809380939 in words is "three hundred ninety-three billion, eight hundred nine million, three hundred eighty thousand, nine hundred thirty-nine".