938923986 has 192 divisors, whose sum is σ = 2680667136. Its totient is φ = 215107200.

The previous prime is 938923961. The next prime is 938923987. The reversal of 938923986 is 689329839.

It is a super-2 number, since 2×938923986² = 1763156502972256392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (938923987) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 966481 + ... + 967451.

It is an arithmetic number, because the mean of its divisors is an integer number (13961808).

Almost surely, 2^938923986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938923986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1340333568).

938923986 is an abundant number, since it is smaller than the sum of its proper divisors (1741743150).

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

938923986 is a wasteful number, since it uses less digits than its factorization.

938923986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1030 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 57.

The square root of 938923986 is about 30641.8665554173. The cubic root of 938923986 is about 979.2121899881.

The spelling of 938923986 in words is "nine hundred thirty-eight million, nine hundred twenty-three thousand, nine hundred eighty-six".