9381969 has 9 divisors (see below), whose sum is σ = 13565019. Its totient is φ = 6248520.

The previous prime is 9381949. The next prime is 9381997. The reversal of 9381969 is 9691839.

The square root of 9381969 is 3063.

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., 5461569 + 3920400 = 2337^2 + 1980^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 9381969 - 2¹¹ = 9379921 is a prime.

It is a super-2 number, since 2×9381969² = 176042684633922, which contains 22 as substring.

9381969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9381919) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8679 + ... + 9699.

Almost surely, 2^9381969 is an apocalyptic number.

9381969 is the 3063-rd square number.

9381969 is the 1532-nd centered octagonal number.

It is an amenable number.

9381969 is a deficient number, since it is larger than the sum of its proper divisors (4183050).

9381969 is an equidigital number, since it uses as much as digits as its factorization.

9381969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 1024 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The cubic root of 9381969 is about 210.9104012266.

Multiplying 9381969 by its product of digits (104976), we get a square (984881577744 = 992412²).

The spelling of 9381969 in words is "nine million, three hundred eighty-one thousand, nine hundred sixty-nine".