30212089 has 2 divisors, whose sum is σ = 30212090. Its totient is φ = 30212088.

The previous prime is 30212057. The next prime is 30212093. The reversal of 30212089 is 98021203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 5212089 = 5000^2 + 2283^2 .

It is a cyclic number.

It is not a de Polignac number, because 30212089 - 2⁵ = 30212057 is a prime.

It is not a weakly prime, because it can be changed into another prime (30212389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106044 + 15106045.

It is an arithmetic number, because the mean of its divisors is an integer number (15106045).

Almost surely, 2^30212089 is an apocalyptic number.

It is an amenable number.

30212089 is a deficient number, since it is larger than the sum of its proper divisors (1).

30212089 is an equidigital number, since it uses as much as digits as its factorization.

30212089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 30212089 is about 5496.5524649547. The cubic root of 30212089 is about 311.4537649508.

The spelling of 30212089 in words is "thirty million, two hundred twelve thousand, eighty-nine".