9072169 has 8 divisors (see below), whose sum is σ = 9788040. Its totient is φ = 8376576.

The previous prime is 9072127. The next prime is 9072191. The reversal of 9072169 is 9612709.

It can be written as a sum of positive squares in 4 ways, for example, as 2286144 + 6786025 = 1512^2 + 2605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9072169 is a prime.

It is a super-2 number, since 2×9072169² = 164608500729122, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

9072169 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9072109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4134 + ... + 5935.

It is an arithmetic number, because the mean of its divisors is an integer number (1223505).

Almost surely, 2^9072169 is an apocalyptic number.

It is an amenable number.

9072169 is a deficient number, since it is larger than the sum of its proper divisors (715871).

9072169 is a wasteful number, since it uses less digits than its factorization.

9072169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10139.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 9072169 is about 3012.0041500635. The cubic root of 9072169 is about 208.5628937656.

The spelling of 9072169 in words is "nine million, seventy-two thousand, one hundred sixty-nine".