4419409 has 2 divisors, whose sum is σ = 4419410. Its totient is φ = 4419408.

The previous prime is 4419407. The next prime is 4419451. The reversal of 4419409 is 9049144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4410000 + 9409 = 2100^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 4419409 - 2¹ = 4419407 is a prime.

Together with 4419407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4419407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2209704 + 2209705.

It is an arithmetic number, because the mean of its divisors is an integer number (2209705).

Almost surely, 2^4419409 is an apocalyptic number.

It is an amenable number.

4419409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4419409 is an equidigital number, since it uses as much as digits as its factorization.

4419409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4419409 is about 2102.2390444476. The cubic root of 4419409 is about 164.1048432324.

It can be divided in two parts, 441 and 9409, that multiplied together give a square (4149369 = 2037²).

The spelling of 4419409 in words is "four million, four hundred nineteen thousand, four hundred nine".