4249409 has 2 divisors, whose sum is σ = 4249410. Its totient is φ = 4249408.

The previous prime is 4249391. The next prime is 4249417. The reversal of 4249409 is 9049424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3763600 + 485809 = 1940^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 4249409 - 2¹² = 4245313 is a prime.

It is not a weakly prime, because it can be changed into another prime (4249429) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2124704 + 2124705.

It is an arithmetic number, because the mean of its divisors is an integer number (2124705).

Almost surely, 2^4249409 is an apocalyptic number.

It is an amenable number.

4249409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4249409 is an equidigital number, since it uses as much as digits as its factorization.

4249409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 4249409 is about 2061.4094692710. The cubic root of 4249409 is about 161.9730814391.

The spelling of 4249409 in words is "four million, two hundred forty-nine thousand, four hundred nine".