9166649 has 2 divisors, whose sum is σ = 9166650. Its totient is φ = 9166648.

The previous prime is 9166643. The next prime is 9166667. The reversal of 9166649 is 9466619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8596624 + 570025 = 2932^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 9166649 - 2⁸ = 9166393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9166643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4583324 + 4583325.

It is an arithmetic number, because the mean of its divisors is an integer number (4583325).

Almost surely, 2^9166649 is an apocalyptic number.

It is an amenable number.

9166649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9166649 is an equidigital number, since it uses as much as digits as its factorization.

9166649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 9166649 is about 3027.6474365421. The cubic root of 9166649 is about 209.2844048244.

The spelling of 9166649 in words is "nine million, one hundred sixty-six thousand, six hundred forty-nine".