938439489 has 16 divisors (see below), whose sum is σ = 1360591232. Its totient is φ = 571891968.

The previous prime is 938439487. The next prime is 938439497. The reversal of 938439489 is 984934839.

It is not a de Polignac number, because 938439489 - 2¹ = 938439487 is a prime.

It is a super-2 number, since 2×938439489² = 1761337349029162242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (938439487) 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, 112792 + ... + 120825.

It is an arithmetic number, because the mean of its divisors is an integer number (85036952).

Almost surely, 2^938439489 is an apocalyptic number.

It is an amenable number.

938439489 is a deficient number, since it is larger than the sum of its proper divisors (422151743).

938439489 is a wasteful number, since it uses less digits than its factorization.

938439489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233736.

The product of its digits is 6718464, while the sum is 57.

The square root of 938439489 is about 30633.9597342557. The cubic root of 938439489 is about 979.0437322634.

The spelling of 938439489 in words is "nine hundred thirty-eight million, four hundred thirty-nine thousand, four hundred eighty-nine".