8028810409 has 2 divisors, whose sum is σ = 8028810410. Its totient is φ = 8028810408.

The previous prime is 8028810407. The next prime is 8028810437. The reversal of 8028810409 is 9040188208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4455162009 + 3573648400 = 66747^2 + 59780^2 .

It is a cyclic number.

It is not a de Polignac number, because 8028810409 - 2¹ = 8028810407 is a prime.

Together with 8028810407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8028810407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4014405204 + 4014405205.

It is an arithmetic number, because the mean of its divisors is an integer number (4014405205).

Almost surely, 2^8028810409 is an apocalyptic number.

It is an amenable number.

8028810409 is a deficient number, since it is larger than the sum of its proper divisors (1).

8028810409 is an equidigital number, since it uses as much as digits as its factorization.

8028810409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 8028810409 is about 89603.6294409998. The cubic root of 8028810409 is about 2002.3979910869.

The spelling of 8028810409 in words is "eight billion, twenty-eight million, eight hundred ten thousand, four hundred nine".