30965939 has 8 divisors (see below), whose sum is σ = 32639760. Its totient is φ = 29332576.

The previous prime is 30965923. The next prime is 30965941. The reversal of 30965939 is 93956903.

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 30965939 - 2⁴ = 30965923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30965939.

It is not an unprimeable number, because it can be changed into a prime (30965969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8537 + ... + 11610.

It is an arithmetic number, because the mean of its divisors is an integer number (4079970).

Almost surely, 2^30965939 is an apocalyptic number.

30965939 is a deficient number, since it is larger than the sum of its proper divisors (1673821).

30965939 is a wasteful number, since it uses less digits than its factorization.

30965939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20229.

The product of its (nonzero) digits is 196830, while the sum is 44.

The square root of 30965939 is about 5564.7047540728. The cubic root of 30965939 is about 314.0229708539.

The spelling of 30965939 in words is "thirty million, nine hundred sixty-five thousand, nine hundred thirty-nine".