938189969 has 4 divisors (see below), whose sum is σ = 938911296. Its totient is φ = 937468644.

The previous prime is 938189957. The next prime is 938190031. The reversal of 938189969 is 969981839.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938189969 is a prime.

It is a super-2 number, since 2×938189969² = 1760400835864441922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938189939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358709 + ... + 361314.

It is an arithmetic number, because the mean of its divisors is an integer number (234727824).

Almost surely, 2^938189969 is an apocalyptic number.

It is an amenable number.

938189969 is a deficient number, since it is larger than the sum of its proper divisors (721327).

938189969 is a wasteful number, since it uses less digits than its factorization.

938189969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721326.

The product of its digits is 7558272, while the sum is 62.

The square root of 938189969 is about 30629.8868590793. The cubic root of 938189969 is about 978.9569525085.

The spelling of 938189969 in words is "nine hundred thirty-eight million, one hundred eighty-nine thousand, nine hundred sixty-nine".