384128973 has 20 divisors (see below), whose sum is σ = 574736448. Its totient is φ = 255678120.

The previous prime is 384128963. The next prime is 384128977. The reversal of 384128973 is 379821483.

It is not a de Polignac number, because 384128973 - 2¹⁰ = 384127949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384128977) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52540 + ... + 59402.

Almost surely, 2^384128973 is an apocalyptic number.

It is an amenable number.

384128973 is a deficient number, since it is larger than the sum of its proper divisors (190607475).

384128973 is an equidigital number, since it uses as much as digits as its factorization.

384128973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7566 (or 7557 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 384128973 is about 19599.2084789157. The cubic root of 384128973 is about 726.9296028486.

The spelling of 384128973 in words is "three hundred eighty-four million, one hundred twenty-eight thousand, nine hundred seventy-three".