938191212 has 72 divisors (see below), whose sum is σ = 2719272192. Its totient is φ = 267170400.

The previous prime is 938191193. The next prime is 938191217. The reversal of 938191212 is 212191839.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (938191217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72387 + ... + 84357.

Almost surely, 2^938191212 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 938191212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359636096).

938191212 is an abundant number, since it is smaller than the sum of its proper divisors (1781080980).

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

938191212 is a wasteful number, since it uses less digits than its factorization.

938191212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12299 (or 12294 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 938191212 is about 30629.9071497124. The cubic root of 938191212 is about 978.9573848456.

The spelling of 938191212 in words is "nine hundred thirty-eight million, one hundred ninety-one thousand, two hundred twelve".