30129829 has 2 divisors, whose sum is σ = 30129830. Its totient is φ = 30129828.

The previous prime is 30129823. The next prime is 30129851. The reversal of 30129829 is 92892103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20948929 + 9180900 = 4577^2 + 3030^2 .

It is an emirp because it is prime and its reverse (92892103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30129829 - 2⁹ = 30129317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30129794 and 30129803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30129823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15064914 + 15064915.

It is an arithmetic number, because the mean of its divisors is an integer number (15064915).

Almost surely, 2^30129829 is an apocalyptic number.

It is an amenable number.

30129829 is a deficient number, since it is larger than the sum of its proper divisors (1).

30129829 is an equidigital number, since it uses as much as digits as its factorization.

30129829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 30129829 is about 5489.0644922427. The cubic root of 30129829 is about 311.1708376497.

The spelling of 30129829 in words is "thirty million, one hundred twenty-nine thousand, eight hundred twenty-nine".