8260009 has 2 divisors, whose sum is σ = 8260010. Its totient is φ = 8260008.

The previous prime is 8259973. The next prime is 8260019. The reversal of 8260009 is 9000628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 222784 = 2835^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 8260009 - 2⁹ = 8259497 is a prime.

It is not a weakly prime, because it can be changed into another prime (8260019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4130004 + 4130005.

It is an arithmetic number, because the mean of its divisors is an integer number (4130005).

Almost surely, 2^8260009 is an apocalyptic number.

It is an amenable number.

8260009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8260009 is an equidigital number, since it uses as much as digits as its factorization.

8260009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 8260009 is about 2874.0231383898. The cubic root of 8260009 is about 202.1436826972.

The spelling of 8260009 in words is "eight million, two hundred sixty thousand, nine".