384938497 has 4 divisors (see below), whose sum is σ = 407581956. Its totient is φ = 362295040.

The previous prime is 384938453. The next prime is 384938509. The reversal of 384938497 is 794839483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794839483 = 19 ⋅41833657.

It can be written as a sum of positive squares in 2 ways, for example, as 277422336 + 107516161 = 16656^2 + 10369^2 .

It is a cyclic number.

It is not a de Polignac number, because 384938497 - 2¹⁹ = 384414209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384938447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11321704 + ... + 11321737.

It is an arithmetic number, because the mean of its divisors is an integer number (101895489).

Almost surely, 2^384938497 is an apocalyptic number.

It is an amenable number.

384938497 is a deficient number, since it is larger than the sum of its proper divisors (22643459).

384938497 is a wasteful number, since it uses less digits than its factorization.

384938497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22643458.

The product of its digits is 5225472, while the sum is 55.

The square root of 384938497 is about 19619.8495661919. The cubic root of 384938497 is about 727.4398950513.

The spelling of 384938497 in words is "three hundred eighty-four million, nine hundred thirty-eight thousand, four hundred ninety-seven".