30444689 has 6 divisors (see below), whose sum is σ = 33464130. Its totient is φ = 27676880.

The previous prime is 30444679. The next prime is 30444703. The reversal of 30444689 is 98644403.

It can be written as a sum of positive squares in only one way, i.e., 28462225 + 1982464 = 5335^2 + 1408^2 .

It is not a de Polignac number, because 30444689 - 2²⁰ = 29396113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30444619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125684 + ... + 125925.

It is an arithmetic number, because the mean of its divisors is an integer number (5577355).

Almost surely, 2^30444689 is an apocalyptic number.

It is an amenable number.

30444689 is a deficient number, since it is larger than the sum of its proper divisors (3019441).

30444689 is a wasteful number, since it uses less digits than its factorization.

30444689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251631 (or 251620 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 30444689 is about 5517.6706135832. The cubic root of 30444689 is about 312.2510067803.

The spelling of 30444689 in words is "thirty million, four hundred forty-four thousand, six hundred eighty-nine".