30900029 has 4 divisors (see below), whose sum is σ = 31218684. Its totient is φ = 30581376.

The previous prime is 30900013. The next prime is 30900043. The reversal of 30900029 is 92000903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92000903 = 139 ⋅661877.

It can be written as a sum of positive squares in 2 ways, for example, as 8791225 + 22108804 = 2965^2 + 4702^2 .

It is a cyclic number.

It is not a de Polignac number, because 30900029 - 2⁴ = 30900013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30899977 and 30900013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30900059) 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 in 3 ways as a sum of consecutive naturals, for example, 159182 + ... + 159375.

It is an arithmetic number, because the mean of its divisors is an integer number (7804671).

Almost surely, 2^30900029 is an apocalyptic number.

It is an amenable number.

30900029 is a deficient number, since it is larger than the sum of its proper divisors (318655).

30900029 is an equidigital number, since it uses as much as digits as its factorization.

30900029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318654.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 30900029 is about 5558.7794523618. The cubic root of 30900029 is about 313.8000166818.

The spelling of 30900029 in words is "thirty million, nine hundred thousand, twenty-nine".