938621408 has 48 divisors (see below), whose sum is σ = 1970846640. Its totient is φ = 438491136.

The previous prime is 938621407. The next prime is 938621417. The reversal of 938621408 is 804126839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938621407) 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 7 ways as a sum of consecutive naturals, for example, 69410 + ... + 81822.

It is an arithmetic number, because the mean of its divisors is an integer number (41059305).

Almost surely, 2^938621408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938621408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985423320).

938621408 is an abundant number, since it is smaller than the sum of its proper divisors (1032225232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

938621408 is a wasteful number, since it uses less digits than its factorization.

938621408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12579 (or 12571 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 938621408 is about 30636.9288278052. The cubic root of 938621408 is about 979.1069915896.

The spelling of 938621408 in words is "nine hundred thirty-eight million, six hundred twenty-one thousand, four hundred eight".