30945889 has 8 divisors (see below), whose sum is σ = 35080640. Its totient is φ = 27061776.

The previous prime is 30945877. The next prime is 30945911. The reversal of 30945889 is 98854903.

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

It is not a de Polignac number, because 30945889 - 2⁹ = 30945377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30945809) 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, 62397 + ... + 62890.

It is an arithmetic number, because the mean of its divisors is an integer number (4385080).

Almost surely, 2^30945889 is an apocalyptic number.

It is an amenable number.

30945889 is a deficient number, since it is larger than the sum of its proper divisors (4134751).

30945889 is a wasteful number, since it uses less digits than its factorization.

30945889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125319.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 30945889 is about 5562.9029292268. The cubic root of 30945889 is about 313.9551811022.

The spelling of 30945889 in words is "thirty million, nine hundred forty-five thousand, eight hundred eighty-nine".