4909445 has 4 divisors (see below), whose sum is σ = 5891340. Its totient is φ = 3927552.

The previous prime is 4909441. The next prime is 4909451. The reversal of 4909445 is 5449094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3467044 + 1442401 = 1862^2 + 1201^2 .

It is a cyclic number.

It is not a de Polignac number, because 4909445 - 2² = 4909441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4909441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490940 + ... + 490949.

It is an arithmetic number, because the mean of its divisors is an integer number (1472835).

Almost surely, 2^4909445 is an apocalyptic number.

It is an amenable number.

4909445 is a deficient number, since it is larger than the sum of its proper divisors (981895).

4909445 is an equidigital number, since it uses as much as digits as its factorization.

4909445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981894.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 4909445 is about 2215.7267430800. The cubic root of 4909445 is about 169.9589866459.

The spelling of 4909445 in words is "four million, nine hundred nine thousand, four hundred forty-five".