938688669 has 10 divisors (see below), whose sum is σ = 1402238750. Its totient is φ = 625792392.

The previous prime is 938688601. The next prime is 938688689. The reversal of 938688669 is 966886839.

It can be written as a sum of positive squares in only one way, i.e., 898200900 + 40487769 = 29970^2 + 6363^2 .

It is not a de Polignac number, because 938688669 - 2¹² = 938684573 is a prime.

It is a super-2 number, since 2×938688669² = 1762272834617983122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938688689) 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 9 ways as a sum of consecutive naturals, for example, 5794294 + ... + 5794455.

It is an arithmetic number, because the mean of its divisors is an integer number (140223875).

Almost surely, 2^938688669 is an apocalyptic number.

It is an amenable number.

938688669 is a deficient number, since it is larger than the sum of its proper divisors (463550081).

938688669 is a wasteful number, since it uses less digits than its factorization.

938688669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11588761 (or 11588752 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The square root of 938688669 is about 30638.0265193436. The cubic root of 938688669 is about 979.1303784212.

The spelling of 938688669 in words is "nine hundred thirty-eight million, six hundred eighty-eight thousand, six hundred sixty-nine".