30002009 has 2 divisors, whose sum is σ = 30002010. Its totient is φ = 30002008.

The previous prime is 30001999. The next prime is 30002023. The reversal of 30002009 is 90020003.

It is a happy number.

It is an a-pointer prime, because the next prime (30002023) can be obtained adding 30002009 to its sum of digits (14).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26296384 + 3705625 = 5128^2 + 1925^2 .

It is an emirp because it is prime and its reverse (90020003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30002009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30001984 and 30002002.

It is not a weakly prime, because it can be changed into another prime (30002029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15001004 + 15001005.

It is an arithmetic number, because the mean of its divisors is an integer number (15001005).

Almost surely, 2^30002009 is an apocalyptic number.

It is an amenable number.

30002009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30002009 is an equidigital number, since it uses as much as digits as its factorization.

30002009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30002009 is about 5477.4089677511. The cubic root of 30002009 is about 310.7301864740.

The spelling of 30002009 in words is "thirty million, two thousand, nine".