30809039 has 2 divisors, whose sum is σ = 30809040. Its totient is φ = 30809038.

The previous prime is 30809003. The next prime is 30809047. The reversal of 30809039 is 93090803.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30809039 - 2²⁰ = 29760463 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30808996 and 30809014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30809099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15404519 + 15404520.

It is an arithmetic number, because the mean of its divisors is an integer number (15404520).

Almost surely, 2^30809039 is an apocalyptic number.

30809039 is a deficient number, since it is larger than the sum of its proper divisors (1).

30809039 is an equidigital number, since it uses as much as digits as its factorization.

30809039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 30809039 is about 5550.5890678378. The cubic root of 30809039 is about 313.4917026735.

The spelling of 30809039 in words is "thirty million, eight hundred nine thousand, thirty-nine".