284121329 has 8 divisors (see below), whose sum is σ = 288489000. Its totient is φ = 279766656.

The previous prime is 284121317. The next prime is 284121353. The reversal of 284121329 is 923121482.

It can be written as a sum of positive squares in 4 ways, for example, as 54538225 + 229583104 = 7385^2 + 15152^2 .

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 284121329 - 2¹² = 284117233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284121295 and 284121304.

It is not an unprimeable number, because it can be changed into a prime (284121389) 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, 46547 + ... + 52295.

It is an arithmetic number, because the mean of its divisors is an integer number (36061125).

Almost surely, 2^284121329 is an apocalyptic number.

It is an amenable number.

284121329 is a deficient number, since it is larger than the sum of its proper divisors (4367671).

284121329 is an equidigital number, since it uses as much as digits as its factorization.

284121329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6499.

The product of its digits is 6912, while the sum is 32.

The square root of 284121329 is about 16855.8989377606. The cubic root of 284121329 is about 657.4074365495.

The spelling of 284121329 in words is "two hundred eighty-four million, one hundred twenty-one thousand, three hundred twenty-nine".