9720284001169 has 27 divisors (see below), whose sum is σ = 11503689924987. Its totient is φ = 8189372248848.

The previous prime is 9720284001119. The next prime is 9720284001179. The reversal of 9720284001169 is 9611004820279.

The square root of 9720284001169 is 3117737.

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., 8123144112769 + 1597139888400 = 2850113^2 + 1263780^2 .

It is not a de Polignac number, because 9720284001169 - 2¹⁵ = 9720283968401 is a prime.

It is a super-2 number, since 2×9720284001169² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9720284001119) 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, 1287621607 + ... + 1287629155.

Almost surely, 2^{9720284001169} is an apocalyptic number.

9720284001169 is the 3117737-th square number.

9720284001169 is the 1558869-th centered octagonal number.

It is an amenable number.

9720284001169 is a deficient number, since it is larger than the sum of its proper divisors (1783405923818).

9720284001169 is an frugal number, since it uses more digits than its factorization.

9720284001169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15230 (or 7615 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

Multiplying 9720284001169 by its sum of digits (49), we get a square (476293916057281 = 21824159²).

9720284001169 divided by its sum of digits (49) gives a square (198373142881 = 445391²).

The spelling of 9720284001169 in words is "nine trillion, seven hundred twenty billion, two hundred eighty-four million, one thousand, one hundred sixty-nine".