384088261 has 4 divisors (see below), whose sum is σ = 384257772. Its totient is φ = 383918752.

The previous prime is 384088253. The next prime is 384088279. The reversal of 384088261 is 162880483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162880483 = 19 ⋅8572657.

It can be written as a sum of positive squares in 2 ways, for example, as 243547236 + 140541025 = 15606^2 + 11855^2 .

It is a cyclic number.

It is not a de Polignac number, because 384088261 - 2³ = 384088253 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384088241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81310 + ... + 85903.

It is an arithmetic number, because the mean of its divisors is an integer number (96064443).

Almost surely, 2^384088261 is an apocalyptic number.

It is an amenable number.

384088261 is a deficient number, since it is larger than the sum of its proper divisors (169511).

384088261 is a wasteful number, since it uses less digits than its factorization.

384088261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169510.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 384088261 is about 19598.1698380231. The cubic root of 384088261 is about 726.9039206726.

The spelling of 384088261 in words is "three hundred eighty-four million, eighty-eight thousand, two hundred sixty-one".