384967643 has 4 divisors (see below), whose sum is σ = 386962488. Its totient is φ = 382972800.

The previous prime is 384967571. The next prime is 384967657. The reversal of 384967643 is 346769483.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384967643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 384967591 and 384967600.

It is not an unprimeable number, because it can be changed into a prime (384967243) 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, 997133 + ... + 997518.

It is an arithmetic number, because the mean of its divisors is an integer number (96740622).

Almost surely, 2^384967643 is an apocalyptic number.

384967643 is a deficient number, since it is larger than the sum of its proper divisors (1994845).

384967643 is a wasteful number, since it uses less digits than its factorization.

384967643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994844.

The product of its digits is 2612736, while the sum is 50.

The square root of 384967643 is about 19620.5923203149. The cubic root of 384967643 is about 727.4582541989.

The spelling of 384967643 in words is "three hundred eighty-four million, nine hundred sixty-seven thousand, six hundred forty-three".