30974389 has 8 divisors (see below), whose sum is σ = 33065280. Its totient is φ = 28929600.

The previous prime is 30974369. The next prime is 30974413. The reversal of 30974389 is 98347903.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30974389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30974309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10132 + ... + 12829.

It is an arithmetic number, because the mean of its divisors is an integer number (4133160).

Almost surely, 2^30974389 is an apocalyptic number.

It is an amenable number.

30974389 is a deficient number, since it is larger than the sum of its proper divisors (2090891).

30974389 is a wasteful number, since it uses less digits than its factorization.

30974389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23051.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 30974389 is about 5565.4639519091. The cubic root of 30974389 is about 314.0515318348.

The spelling of 30974389 in words is "thirty million, nine hundred seventy-four thousand, three hundred eighty-nine".