384478975 has 6 divisors (see below), whose sum is σ = 476753960. Its totient is φ = 307583160.

The previous prime is 384478973. The next prime is 384478979. The reversal of 384478975 is 579874483.

It is not a de Polignac number, because 384478975 - 2¹ = 384478973 is a prime.

It is a super-3 number, since 3×384478975³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384478973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7689555 + ... + 7689604.

Almost surely, 2^384478975 is an apocalyptic number.

384478975 is a deficient number, since it is larger than the sum of its proper divisors (92274985).

384478975 is a wasteful number, since it uses less digits than its factorization.

384478975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15379169 (or 15379164 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 55.

The square root of 384478975 is about 19608.1354289489. The cubic root of 384478975 is about 727.1503182832.

The spelling of 384478975 in words is "three hundred eighty-four million, four hundred seventy-eight thousand, nine hundred seventy-five".