284439089 has 4 divisors (see below), whose sum is σ = 310297200. Its totient is φ = 258580980.

The previous prime is 284439083. The next prime is 284439143. The reversal of 284439089 is 980934482.

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 284439089 - 2⁴ = 284439073 is a prime.

It is a super-2 number, since 2×284439089² = 161811190702299842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284439083) 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, 12929039 + ... + 12929060.

It is an arithmetic number, because the mean of its divisors is an integer number (77574300).

Almost surely, 2^284439089 is an apocalyptic number.

It is an amenable number.

284439089 is a deficient number, since it is larger than the sum of its proper divisors (25858111).

284439089 is a wasteful number, since it uses less digits than its factorization.

284439089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25858110.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 284439089 is about 16865.3220840872. The cubic root of 284439089 is about 657.6524257346.

The spelling of 284439089 in words is "two hundred eighty-four million, four hundred thirty-nine thousand, eighty-nine".