384402281 has 8 divisors (see below), whose sum is σ = 404814720. Its totient is φ = 364007952.

The previous prime is 384402259. The next prime is 384402301. The reversal of 384402281 is 182204483.

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

It is a cyclic number.

It is not a de Polignac number, because 384402281 - 2⁶ = 384402217 is a prime.

It is a super-2 number, since 2×384402281² = 295530227276005922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (384422281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75296 + ... + 80238.

It is an arithmetic number, because the mean of its divisors is an integer number (50601840).

Almost surely, 2^384402281 is an apocalyptic number.

It is an amenable number.

384402281 is a deficient number, since it is larger than the sum of its proper divisors (20412439).

384402281 is a wasteful number, since it uses less digits than its factorization.

384402281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9055.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 384402281 is about 19606.1796635653. The cubic root of 384402281 is about 727.1019655958.

The spelling of 384402281 in words is "three hundred eighty-four million, four hundred two thousand, two hundred eighty-one".