30449147 has 2 divisors, whose sum is σ = 30449148. Its totient is φ = 30449146.

The previous prime is 30449143. The next prime is 30449197. The reversal of 30449147 is 74194403.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (74194403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30449147 - 2² = 30449143 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30449141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15224573 + 15224574.

It is an arithmetic number, because the mean of its divisors is an integer number (15224574).

Almost surely, 2^30449147 is an apocalyptic number.

30449147 is a deficient number, since it is larger than the sum of its proper divisors (1).

30449147 is an equidigital number, since it uses as much as digits as its factorization.

30449147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 30449147 is about 5518.0745736171. The cubic root of 30449147 is about 312.2662469540.

The spelling of 30449147 in words is "thirty million, four hundred forty-nine thousand, one hundred forty-seven".