30144439 has 16 divisors (see below), whose sum is σ = 33620832. Its totient is φ = 26851968.

The previous prime is 30144407. The next prime is 30144449. The reversal of 30144439 is 93444103.

It is not a de Polignac number, because 30144439 - 2⁵ = 30144407 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 (30144449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45837 + ... + 46489.

It is an arithmetic number, because the mean of its divisors is an integer number (2101302).

Almost surely, 2^30144439 is an apocalyptic number.

30144439 is a deficient number, since it is larger than the sum of its proper divisors (3476393).

30144439 is a wasteful number, since it uses less digits than its factorization.

30144439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 30144439 is about 5490.3951588205. The cubic root of 30144439 is about 311.2211252602.

The spelling of 30144439 in words is "thirty million, one hundred forty-four thousand, four hundred thirty-nine".