224005409 has 2 divisors, whose sum is σ = 224005410. Its totient is φ = 224005408.

The previous prime is 224005393. The next prime is 224005471. The reversal of 224005409 is 904500422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212343184 + 11662225 = 14572^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 224005409 - 2⁴ = 224005393 is a prime.

It is a super-2 number, since 2×224005409² = 100356846522514562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (224005489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112002704 + 112002705.

It is an arithmetic number, because the mean of its divisors is an integer number (112002705).

Almost surely, 2^224005409 is an apocalyptic number.

It is an amenable number.

224005409 is a deficient number, since it is larger than the sum of its proper divisors (1).

224005409 is an equidigital number, since it uses as much as digits as its factorization.

224005409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 224005409 is about 14966.8102480121. The cubic root of 224005409 is about 607.3226827018.

The spelling of 224005409 in words is "two hundred twenty-four million, five thousand, four hundred nine".