384322261 has 4 divisors (see below), whose sum is σ = 393260032. Its totient is φ = 375384492.

The previous prime is 384322223. The next prime is 384322307. The reversal of 384322261 is 162223483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 384322261 - 2¹¹ = 384320213 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 (384322061) 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, 4468821 + ... + 4468906.

It is an arithmetic number, because the mean of its divisors is an integer number (98315008).

Almost surely, 2^384322261 is an apocalyptic number.

It is an amenable number.

384322261 is a deficient number, since it is larger than the sum of its proper divisors (8937771).

384322261 is an equidigital number, since it uses as much as digits as its factorization.

384322261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8937770.

The product of its digits is 13824, while the sum is 31.

The square root of 384322261 is about 19604.1388742276. The cubic root of 384322261 is about 727.0515091340.

The spelling of 384322261 in words is "three hundred eighty-four million, three hundred twenty-two thousand, two hundred sixty-one".