8970173521 has 9 divisors (see below), whose sum is σ = 9147734491. Its totient is φ = 8795999992.

The previous prime is 8970173461. The next prime is 8970173557. The reversal of 8970173521 is 1253710798.

The square root of 8970173521 is 94711.

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

8970173521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6466572225 + 2503601296 = 80415^2 + 50036^2 .

It is not a de Polignac number, because 8970173521 - 2¹¹ = 8970171473 is a prime.

It is a super-3 number, since 3×8970173521³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8970173591) 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 8 ways as a sum of consecutive naturals, for example, 5018790 + ... + 5020576.

Almost surely, 2^8970173521 is an apocalyptic number.

8970173521 is the 94711-st square number.

8970173521 is the 47356-th centered octagonal number.

It is an amenable number.

8970173521 is a deficient number, since it is larger than the sum of its proper divisors (177560970).

8970173521 is an frugal number, since it uses more digits than its factorization.

8970173521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 43.

The cubic root of 8970173521 is about 2077.7834438188.

The spelling of 8970173521 in words is "eight billion, nine hundred seventy million, one hundred seventy-three thousand, five hundred twenty-one".