938397940722 has 450 divisors, whose sum is σ = 2525223528135. Its totient is φ = 260402376960.

The previous prime is 938397940717. The next prime is 938397940723. The reversal of 938397940722 is 227049793839.

938397940722 is a `hidden beast` number, since 93 + 8 + 397 + 94 + 0 + 72 + 2 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 937258270641 + 1139670081 = 968121^2 + 33759^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=684981.

It is a self number, because there is not a number n which added to its sum of digits gives 938397940722.

It is not an unprimeable number, because it can be changed into a prime (938397940723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 224 ways as a sum of consecutive naturals, for example, 25362106488 + ... + 25362106524.

Almost surely, 2^938397940722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938397940722

938397940722 is an abundant number, since it is smaller than the sum of its proper divisors (1586825587413).

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

938397940722 is an equidigital number, since it uses as much as digits as its factorization.

938397940722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 63.

The spelling of 938397940722 in words is "nine hundred thirty-eight billion, three hundred ninety-seven million, nine hundred forty thousand, seven hundred twenty-two".