30927939 has 16 divisors (see below), whose sum is σ = 49178112. Its totient is φ = 16904448.

The previous prime is 30927931. The next prime is 30927943. The reversal of 30927939 is 93972903.

It is not a de Polignac number, because 30927939 - 2³ = 30927931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30927939.

It is not an unprimeable number, because it can be changed into a prime (30927931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31534 + ... + 32499.

It is an arithmetic number, because the mean of its divisors is an integer number (3073632).

Almost surely, 2^30927939 is an apocalyptic number.

30927939 is a deficient number, since it is larger than the sum of its proper divisors (18250173).

30927939 is a wasteful number, since it uses less digits than its factorization.

30927939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64066.

The product of its (nonzero) digits is 91854, while the sum is 42.

The square root of 30927939 is about 5561.2893289236. The cubic root of 30927939 is about 313.8944666783.

The spelling of 30927939 in words is "thirty million, nine hundred twenty-seven thousand, nine hundred thirty-nine".