938144489 has 2 divisors, whose sum is σ = 938144490. Its totient is φ = 938144488.

The previous prime is 938144423. The next prime is 938144491. The reversal of 938144489 is 984441839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 763693225 + 174451264 = 27635^2 + 13208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938144489 is a prime.

It is a super-2 number, since 2×938144489² = 1760230164482142242, which contains 22 as substring.

Together with 938144491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (938144089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469072244 + 469072245.

It is an arithmetic number, because the mean of its divisors is an integer number (469072245).

Almost surely, 2^938144489 is an apocalyptic number.

It is an amenable number.

938144489 is a deficient number, since it is larger than the sum of its proper divisors (1).

938144489 is an equidigital number, since it uses as much as digits as its factorization.

938144489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 50.

The square root of 938144489 is about 30629.1444379369. The cubic root of 938144489 is about 978.9411335084.

The spelling of 938144489 in words is "nine hundred thirty-eight million, one hundred forty-four thousand, four hundred eighty-nine".