384978237 has 8 divisors (see below), whose sum is σ = 586633536. Its totient is φ = 219987552.

The previous prime is 384978227. The next prime is 384978239. The reversal of 384978237 is 732879483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 384978237 - 2⁴ = 384978221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 384978237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384978239) 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 7 ways as a sum of consecutive naturals, for example, 9166128 + ... + 9166169.

It is an arithmetic number, because the mean of its divisors is an integer number (73329192).

Almost surely, 2^384978237 is an apocalyptic number.

It is an amenable number.

384978237 is a deficient number, since it is larger than the sum of its proper divisors (201655299).

384978237 is a wasteful number, since it uses less digits than its factorization.

384978237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18332307.

The product of its digits is 2032128, while the sum is 51.

The square root of 384978237 is about 19620.8622899199. The cubic root of 384978237 is about 727.4649271598.

It can be divided in two parts, 384978 and 237, that multiplied together give a triangular number (91239786 = T₁₃₅₀₈).

The spelling of 384978237 in words is "three hundred eighty-four million, nine hundred seventy-eight thousand, two hundred thirty-seven".