9111649 has 2 divisors, whose sum is σ = 9111650. Its totient is φ = 9111648.

The previous prime is 9111629. The next prime is 9111667. The reversal of 9111649 is 9461119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7524049 + 1587600 = 2743^2 + 1260^2 .

It is a cyclic number.

It is not a de Polignac number, because 9111649 - 2⁷ = 9111521 is a prime.

It is a Chen prime.

9111649 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9111649.

It is not a weakly prime, because it can be changed into another prime (9111629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4555824 + 4555825.

It is an arithmetic number, because the mean of its divisors is an integer number (4555825).

Almost surely, 2^9111649 is an apocalyptic number.

It is an amenable number.

9111649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9111649 is an equidigital number, since it uses as much as digits as its factorization.

9111649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 9111649 is about 3018.5508112338. The cubic root of 9111649 is about 208.8649952656.

The spelling of 9111649 in words is "nine million, one hundred eleven thousand, six hundred forty-nine".