30472249 has 2 divisors, whose sum is σ = 30472250. Its totient is φ = 30472248.

The previous prime is 30472231. The next prime is 30472271. The reversal of 30472249 is 94227403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30470400 + 1849 = 5520^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 30472249 - 2⁹ = 30471737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30472249.

It is not a weakly prime, because it can be changed into another prime (30472229) 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, 15236124 + 15236125.

It is an arithmetic number, because the mean of its divisors is an integer number (15236125).

Almost surely, 2^30472249 is an apocalyptic number.

It is an amenable number.

30472249 is a deficient number, since it is larger than the sum of its proper divisors (1).

30472249 is an equidigital number, since it uses as much as digits as its factorization.

30472249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30472249 is about 5520.1674793434. The cubic root of 30472249 is about 312.3451999175.

The spelling of 30472249 in words is "thirty million, four hundred seventy-two thousand, two hundred forty-nine".