30030989 has 4 divisors (see below), whose sum is σ = 30322656. Its totient is φ = 29739324.

The previous prime is 30030967. The next prime is 30030991. The reversal of 30030989 is 98903003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98903003 = 109 ⋅907367.

It is a cyclic number.

It is not a de Polignac number, because 30030989 - 2⁸ = 30030733 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 (30030919) 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 3 ways as a sum of consecutive naturals, for example, 145679 + ... + 145884.

It is an arithmetic number, because the mean of its divisors is an integer number (7580664).

Almost surely, 2^30030989 is an apocalyptic number.

It is an amenable number.

30030989 is a deficient number, since it is larger than the sum of its proper divisors (291667).

30030989 is a wasteful number, since it uses less digits than its factorization.

30030989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291666.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 30030989 is about 5480.0537406124. The cubic root of 30030989 is about 310.8302026980.

The spelling of 30030989 in words is "thirty million, thirty thousand, nine hundred eighty-nine".