30049909 has 2 divisors, whose sum is σ = 30049910. Its totient is φ = 30049908.

The previous prime is 30049879. The next prime is 30049913. The reversal of 30049909 is 90994003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21622500 + 8427409 = 4650^2 + 2903^2 .

It is a cyclic number.

It is not a de Polignac number, because 30049909 - 2¹¹ = 30047861 is a prime.

It is equal to p_1860784 and since 30049909 and 1860784 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30049979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15024954 + 15024955.

It is an arithmetic number, because the mean of its divisors is an integer number (15024955).

Almost surely, 2^30049909 is an apocalyptic number.

It is an amenable number.

30049909 is a deficient number, since it is larger than the sum of its proper divisors (1).

30049909 is an equidigital number, since it uses as much as digits as its factorization.

30049909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 30049909 is about 5481.7797292485. The cubic root of 30049909 is about 310.8954649825.

The spelling of 30049909 in words is "thirty million, forty-nine thousand, nine hundred nine".