30530839 has 2 divisors, whose sum is σ = 30530840. Its totient is φ = 30530838.

The previous prime is 30530813. The next prime is 30530849. The reversal of 30530839 is 93803503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30530839 - 2⁷ = 30530711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30530839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30530849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15265419 + 15265420.

It is an arithmetic number, because the mean of its divisors is an integer number (15265420).

Almost surely, 2^30530839 is an apocalyptic number.

30530839 is a deficient number, since it is larger than the sum of its proper divisors (1).

30530839 is an equidigital number, since it uses as much as digits as its factorization.

30530839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 30530839 is about 5525.4718350563. The cubic root of 30530839 is about 312.5452572321.

The spelling of 30530839 in words is "thirty million, five hundred thirty thousand, eight hundred thirty-nine".