384978853 has 16 divisors (see below), whose sum is σ = 460728576. Its totient is φ = 314519040.

The previous prime is 384978823. The next prime is 384978901. The reversal of 384978853 is 358879483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384978853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 384978794 and 384978803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384978823) 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 15 ways as a sum of consecutive naturals, for example, 43093 + ... + 51253.

It is an arithmetic number, because the mean of its divisors is an integer number (28795536).

Almost surely, 2^384978853 is an apocalyptic number.

It is an amenable number.

384978853 is a deficient number, since it is larger than the sum of its proper divisors (75749723).

384978853 is a wasteful number, since it uses less digits than its factorization.

384978853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484.

The product of its digits is 5806080, while the sum is 55.

The square root of 384978853 is about 19620.8779874908. The cubic root of 384978853 is about 727.4653151628.

The spelling of 384978853 in words is "three hundred eighty-four million, nine hundred seventy-eight thousand, eight hundred fifty-three".