284828409 has 6 divisors (see below), whose sum is σ = 411418826. Its totient is φ = 189885600.

The previous prime is 284828399. The next prime is 284828419. The reversal of 284828409 is 904828482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (284828399) and next prime (284828419).

It can be written as a sum of positive squares in only one way, i.e., 284664384 + 164025 = 16872^2 + 405^2 .

It is not a de Polignac number, because 284828409 - 2⁵ = 284828377 is a prime.

It is a super-2 number, since 2×284828409² = 162254445146942562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284828419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15823792 + ... + 15823809.

Almost surely, 2^284828409 is an apocalyptic number.

It is an amenable number.

284828409 is a deficient number, since it is larger than the sum of its proper divisors (126590417).

284828409 is a wasteful number, since it uses less digits than its factorization.

284828409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31647607 (or 31647604 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 284828409 is about 16876.8601641419. The cubic root of 284828409 is about 657.9523382359.

The spelling of 284828409 in words is "two hundred eighty-four million, eight hundred twenty-eight thousand, four hundred nine".