4407409 has 2 divisors, whose sum is σ = 4407410. Its totient is φ = 4407408.

The previous prime is 4407401. The next prime is 4407413. The reversal of 4407409 is 9047044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4397409 + 10000 = 2097^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 4407409 - 2³ = 4407401 is a prime.

It is equal to p₃₀₉₈₁₇ and since 4407409 and 309817 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4407401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2203704 + 2203705.

It is an arithmetic number, because the mean of its divisors is an integer number (2203705).

Almost surely, 2^4407409 is an apocalyptic number.

It is an amenable number.

4407409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4407409 is an equidigital number, since it uses as much as digits as its factorization.

4407409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 4407409 is about 2099.3830045992. The cubic root of 4407409 is about 163.9561775635.

The spelling of 4407409 in words is "four million, four hundred seven thousand, four hundred nine".