384434389691 has 4 divisors (see below), whose sum is σ = 419382970584. Its totient is φ = 349485808800.

The previous prime is 384434389681. The next prime is 384434389697. The reversal of 384434389691 is 196983434483.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 384434389691 - 2¹⁴ = 384434373307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384434389697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17474290430 + ... + 17474290451.

It is an arithmetic number, because the mean of its divisors is an integer number (104845742646).

Almost surely, 2^384434389691 is an apocalyptic number.

384434389691 is a deficient number, since it is larger than the sum of its proper divisors (34948580893).

384434389691 is a wasteful number, since it uses less digits than its factorization.

384434389691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34948580892.

The product of its digits is 53747712, while the sum is 62.

The spelling of 384434389691 in words is "three hundred eighty-four billion, four hundred thirty-four million, three hundred eighty-nine thousand, six hundred ninety-one".