30800009 has 2 divisors, whose sum is σ = 30800010. Its totient is φ = 30800008.

The previous prime is 30799973. The next prime is 30800017. The reversal of 30800009 is 90000803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17875984 + 12924025 = 4228^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 30800009 - 2¹² = 30795913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30800069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15400004 + 15400005.

It is an arithmetic number, because the mean of its divisors is an integer number (15400005).

Almost surely, 2^30800009 is an apocalyptic number.

It is an amenable number.

30800009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30800009 is an equidigital number, since it uses as much as digits as its factorization.

30800009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 30800009 is about 5549.7755810483. The cubic root of 30800009 is about 313.4610719801.

The spelling of 30800009 in words is "thirty million, eight hundred thousand, nine".