284225309 has 4 divisors (see below), whose sum is σ = 290272704. Its totient is φ = 278177916.

The previous prime is 284225257. The next prime is 284225311. The reversal of 284225309 is 903522482.

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 284225309 - 2¹⁶ = 284159773 is a prime.

It is a super-2 number, since 2×284225309² = 161568052552290962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284225509) 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, 3023627 + ... + 3023720.

It is an arithmetic number, because the mean of its divisors is an integer number (72568176).

Almost surely, 2^284225309 is an apocalyptic number.

It is an amenable number.

284225309 is a deficient number, since it is larger than the sum of its proper divisors (6047395).

284225309 is an equidigital number, since it uses as much as digits as its factorization.

284225309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6047394.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 284225309 is about 16858.9830357587. The cubic root of 284225309 is about 657.4876239918.

The spelling of 284225309 in words is "two hundred eighty-four million, two hundred twenty-five thousand, three hundred nine".