24428909 has 2 divisors, whose sum is σ = 24428910. Its totient is φ = 24428908.

The previous prime is 24428903. The next prime is 24428969. The reversal of 24428909 is 90982442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23251684 + 1177225 = 4822^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 24428909 - 2¹⁶ = 24363373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24428903) 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, 12214454 + 12214455.

It is an arithmetic number, because the mean of its divisors is an integer number (12214455).

Almost surely, 2^24428909 is an apocalyptic number.

It is an amenable number.

24428909 is a deficient number, since it is larger than the sum of its proper divisors (1).

24428909 is an equidigital number, since it uses as much as digits as its factorization.

24428909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 24428909 is about 4942.5609758505. The cubic root of 24428909 is about 290.1580945358.

The spelling of 24428909 in words is "twenty-four million, four hundred twenty-eight thousand, nine hundred nine".