30808939 has 8 divisors (see below), whose sum is σ = 35559648. Its totient is φ = 26145600.

The previous prime is 30808931. The next prime is 30808949. The reversal of 30808939 is 93980803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30808939 - 2³ = 30808931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30808931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21082 + ... + 22495.

It is an arithmetic number, because the mean of its divisors is an integer number (4444956).

Almost surely, 2^30808939 is an apocalyptic number.

30808939 is a deficient number, since it is larger than the sum of its proper divisors (4750709).

30808939 is a wasteful number, since it uses less digits than its factorization.

30808939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43685.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 30808939 is about 5550.5800597775. The cubic root of 30808939 is about 313.4913634960.

The spelling of 30808939 in words is "thirty million, eight hundred eight thousand, nine hundred thirty-nine".