30249989 has 8 divisors (see below), whose sum is σ = 37714368. Its totient is φ = 23571360.

The previous prime is 30249971. The next prime is 30250001. The reversal of 30249989 is 98994203.

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 30249989 - 2⁸ = 30249733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30249589) 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, 196352 + ... + 196505.

It is an arithmetic number, because the mean of its divisors is an integer number (4714296).

Almost surely, 2^30249989 is an apocalyptic number.

It is an amenable number.

30249989 is a deficient number, since it is larger than the sum of its proper divisors (7464379).

30249989 is a wasteful number, since it uses less digits than its factorization.

30249989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392875.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 30249989 is about 5499.9989999999. The cubic root of 30249989 is about 311.5839464507.

The spelling of 30249989 in words is "thirty million, two hundred forty-nine thousand, nine hundred eighty-nine".