384887997 has 32 divisors (see below), whose sum is σ = 646396800. Its totient is φ = 224384256.

The previous prime is 384887981. The next prime is 384888011. The reversal of 384887997 is 799788483.

It is not a de Polignac number, because 384887997 - 2⁴ = 384887981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384887197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22188 + ... + 35525.

It is an arithmetic number, because the mean of its divisors is an integer number (20199900).

Almost surely, 2^384887997 is an apocalyptic number.

It is an amenable number.

384887997 is a deficient number, since it is larger than the sum of its proper divisors (261508803).

384887997 is a wasteful number, since it uses less digits than its factorization.

384887997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57754 (or 57748 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The square root of 384887997 is about 19618.5625620227. The cubic root of 384887997 is about 727.4080827648.

The spelling of 384887997 in words is "three hundred eighty-four million, eight hundred eighty-seven thousand, nine hundred ninety-seven".