30219029 has 2 divisors, whose sum is σ = 30219030. Its totient is φ = 30219028.

The previous prime is 30219019. The next prime is 30219031. The reversal of 30219029 is 92091203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16728100 + 13490929 = 4090^2 + 3673^2 .

It is an emirp because it is prime and its reverse (92091203) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30219029 is a prime.

Together with 30219031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30218989 and 30219007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30219019) 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, 15109514 + 15109515.

It is an arithmetic number, because the mean of its divisors is an integer number (15109515).

Almost surely, 2^30219029 is an apocalyptic number.

It is an amenable number.

30219029 is a deficient number, since it is larger than the sum of its proper divisors (1).

30219029 is an equidigital number, since it uses as much as digits as its factorization.

30219029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 30219029 is about 5497.1837335130. The cubic root of 30219029 is about 311.4776110746.

The spelling of 30219029 in words is "thirty million, two hundred nineteen thousand, twenty-nine".