30302869 has 2 divisors, whose sum is σ = 30302870. Its totient is φ = 30302868.

The previous prime is 30302863. The next prime is 30302873. The reversal of 30302869 is 96820303.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29571844 + 731025 = 5438^2 + 855^2 .

It is an emirp because it is prime and its reverse (96820303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30302869 - 2³ = 30302861 is a prime.

It is a super-2 number, since 2×30302869² = 1836527739262322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30302869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30302861) 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, 15151434 + 15151435.

It is an arithmetic number, because the mean of its divisors is an integer number (15151435).

Almost surely, 2^30302869 is an apocalyptic number.

It is an amenable number.

30302869 is a deficient number, since it is larger than the sum of its proper divisors (1).

30302869 is an equidigital number, since it uses as much as digits as its factorization.

30302869 is an odious number, because the sum of its binary digits is odd.

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

The square root of 30302869 is about 5504.8041745370. The cubic root of 30302869 is about 311.7654007042.

The spelling of 30302869 in words is "thirty million, three hundred two thousand, eight hundred sixty-nine".