384811285 has 16 divisors (see below), whose sum is σ = 475180272. Its totient is φ = 298944000.

The previous prime is 384811283. The next prime is 384811289. The reversal of 384811285 is 582118483.

It can be written as a sum of positive squares in 8 ways, for example, as 12552849 + 372258436 = 3543^2 + 19294^2 .

It is not a de Polignac number, because 384811285 - 2¹ = 384811283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384811283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109455 + ... + 112915.

It is an arithmetic number, because the mean of its divisors is an integer number (29698767).

Almost surely, 2^384811285 is an apocalyptic number.

It is an amenable number.

384811285 is a deficient number, since it is larger than the sum of its proper divisors (90368987).

384811285 is a wasteful number, since it uses less digits than its factorization.

384811285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its digits is 61440, while the sum is 40.

The square root of 384811285 is about 19616.6073774239. The cubic root of 384811285 is about 727.3597530022.

The spelling of 384811285 in words is "three hundred eighty-four million, eight hundred eleven thousand, two hundred eighty-five".