30873439 has 2 divisors, whose sum is σ = 30873440. Its totient is φ = 30873438.

The previous prime is 30873421. The next prime is 30873443. The reversal of 30873439 is 93437803.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30873439 - 2¹⁵ = 30840671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30873398 and 30873407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30873419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15436719 + 15436720.

It is an arithmetic number, because the mean of its divisors is an integer number (15436720).

Almost surely, 2^30873439 is an apocalyptic number.

30873439 is a deficient number, since it is larger than the sum of its proper divisors (1).

30873439 is an equidigital number, since it uses as much as digits as its factorization.

30873439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 30873439 is about 5556.3872255270. The cubic root of 30873439 is about 313.7099807690.

The spelling of 30873439 in words is "thirty million, eight hundred seventy-three thousand, four hundred thirty-nine".