4146409 has 2 divisors, whose sum is σ = 4146410. Its totient is φ = 4146408.

The previous prime is 4146407. The next prime is 4146451. The reversal of 4146409 is 9046414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4141225 + 5184 = 2035^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 4146409 - 2¹ = 4146407 is a prime.

Together with 4146407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4146403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2073204 + 2073205.

It is an arithmetic number, because the mean of its divisors is an integer number (2073205).

Almost surely, 2^4146409 is an apocalyptic number.

It is an amenable number.

4146409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4146409 is an equidigital number, since it uses as much as digits as its factorization.

4146409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4146409 is about 2036.2733117143. The cubic root of 4146409 is about 160.6536928358.

The spelling of 4146409 in words is "four million, one hundred forty-six thousand, four hundred nine".