30449209 has 8 divisors (see below), whose sum is σ = 35054208. Its totient is φ = 25908000.

The previous prime is 30449197. The next prime is 30449213. The reversal of 30449209 is 90294403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30449209 - 2¹³ = 30441017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30449219) 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 in 7 ways as a sum of consecutive naturals, for example, 14917 + ... + 16834.

It is an arithmetic number, because the mean of its divisors is an integer number (4381776).

Almost surely, 2^30449209 is an apocalyptic number.

It is an amenable number.

30449209 is a deficient number, since it is larger than the sum of its proper divisors (4604999).

30449209 is a wasteful number, since it uses less digits than its factorization.

30449209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31895.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 30449209 is about 5518.0801915159. The cubic root of 30449209 is about 312.2664588975.

The spelling of 30449209 in words is "thirty million, four hundred forty-nine thousand, two hundred nine".