983913221776 has 135 divisors (see below), whose sum is σ = 2004163117929. Its totient is φ = 467934195456.

The previous prime is 983913221747. The next prime is 983913221779. The reversal of 983913221776 is 677122319389.

The square root of 983913221776 is 991924.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 558517075600 + 425396146176 = 747340^2 + 652224^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 983913221776.

It is not an unprimeable number, because it can be changed into a prime (983913221779) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12454597705 + ... + 12454597783.

Almost surely, 2^983913221776 is an apocalyptic number.

983913221776 is the 991924-th square number.

It is an amenable number.

983913221776 is an abundant number, since it is smaller than the sum of its proper divisors (1020249896153).

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

983913221776 is an frugal number, since it uses more digits than its factorization.

983913221776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 197 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 58.

The spelling of 983913221776 in words is "nine hundred eighty-three billion, nine hundred thirteen million, two hundred twenty-one thousand, seven hundred seventy-six".