9090649 has 2 divisors, whose sum is σ = 9090650. Its totient is φ = 9090648.

The previous prime is 9090629. The next prime is 9090671. The reversal of 9090649 is 9460909.

9090649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8450649 + 640000 = 2907^2 + 800^2 .

It is an emirp because it is prime and its reverse (9460909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9090649 - 2¹³ = 9082457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9090629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545324 + 4545325.

It is an arithmetic number, because the mean of its divisors is an integer number (4545325).

Almost surely, 2^9090649 is an apocalyptic number.

It is an amenable number.

9090649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090649 is an equidigital number, since it uses as much as digits as its factorization.

9090649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 9090649 is about 3015.0703142713. The cubic root of 9090649 is about 208.7044118600.

The spelling of 9090649 in words is "nine million, ninety thousand, six hundred forty-nine".