938380689 has 9 divisors (see below), whose sum is σ = 1355571529. Its totient is φ = 625525860.

The previous prime is 938380687. The next prime is 938380727. The reversal of 938380689 is 986083839.

The square root of 938380689 is 30633.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 938380689 - 2¹ = 938380687 is a prime.

It is a super-2 number, since 2×938380689² = 1761116634976229442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (938380687) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 86794 + ... + 97004.

Almost surely, 2^938380689 is an apocalyptic number.

938380689 is the 30633-rd square number.

938380689 is the 15317-th centered octagonal number.

It is an amenable number.

938380689 is a deficient number, since it is larger than the sum of its proper divisors (417190840).

938380689 is an frugal number, since it uses more digits than its factorization.

938380689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428 (or 10214 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The cubic root of 938380689 is about 979.0232837868.

The spelling of 938380689 in words is "nine hundred thirty-eight million, three hundred eighty thousand, six hundred eighty-nine".