384441381 has 12 divisors (see below), whose sum is σ = 555503052. Its totient is φ = 256202496.

The previous prime is 384441329. The next prime is 384441397. The reversal of 384441381 is 183144483.

It can be written as a sum of positive squares in 2 ways, for example, as 223024356 + 161417025 = 14934^2 + 12705^2 .

It is not a de Polignac number, because 384441381 - 2⁹ = 384440869 is a prime.

It is a super-2 number, since 2×384441381² = 295590350850374322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384442381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27285 + ... + 38901.

It is an arithmetic number, because the mean of its divisors is an integer number (46291921).

Almost surely, 2^384441381 is an apocalyptic number.

It is an amenable number.

384441381 is a deficient number, since it is larger than the sum of its proper divisors (171061671).

384441381 is a wasteful number, since it uses less digits than its factorization.

384441381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15300 (or 15297 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 384441381 is about 19607.1767728044. The cubic root of 384441381 is about 727.1266174812.

The spelling of 384441381 in words is "three hundred eighty-four million, four hundred forty-one thousand, three hundred eighty-one".