30001009 has 2 divisors, whose sum is σ = 30001010. Its totient is φ = 30001008.

The previous prime is 30001003. The next prime is 30001031. The reversal of 30001009 is 90010003.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25603600 + 4397409 = 5060^2 + 2097^2 .

It is an emirp because it is prime and its reverse (90010003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30001009 - 2⁵ = 30000977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30001009.

It is not a weakly prime, because it can be changed into another prime (30001003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000504 + 15000505.

It is an arithmetic number, because the mean of its divisors is an integer number (15000505).

Almost surely, 2^30001009 is an apocalyptic number.

It is an amenable number.

30001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30001009 is an equidigital number, since it uses as much as digits as its factorization.

30001009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 30001009 is about 5477.3176829539. The cubic root of 30001009 is about 310.7267341092.

The spelling of 30001009 in words is "thirty million, one thousand, nine".