4028864909 has 2 divisors, whose sum is σ = 4028864910. Its totient is φ = 4028864908.

The previous prime is 4028864893. The next prime is 4028864911. The reversal of 4028864909 is 9094688204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3742747684 + 286117225 = 61178^2 + 16915^2 .

It is a cyclic number.

It is not a de Polignac number, because 4028864909 - 2⁴ = 4028864893 is a prime.

Together with 4028864911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4028864009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2014432454 + 2014432455.

It is an arithmetic number, because the mean of its divisors is an integer number (2014432455).

Almost surely, 2^4028864909 is an apocalyptic number.

It is an amenable number.

4028864909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4028864909 is an equidigital number, since it uses as much as digits as its factorization.

4028864909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 4028864909 is about 63473.3401437170. The cubic root of 4028864909 is about 1591.2102528317.

The spelling of 4028864909 in words is "four billion, twenty-eight million, eight hundred sixty-four thousand, nine hundred nine".