8949649 has 2 divisors, whose sum is σ = 8949650. Its totient is φ = 8949648.

The previous prime is 8949637. The next prime is 8949679. The reversal of 8949649 is 9469498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8809024 + 140625 = 2968^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 8949649 - 2⁵ = 8949617 is a prime.

It is not a weakly prime, because it can be changed into another prime (8949679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4474824 + 4474825.

It is an arithmetic number, because the mean of its divisors is an integer number (4474825).

Almost surely, 2^8949649 is an apocalyptic number.

It is an amenable number.

8949649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8949649 is an equidigital number, since it uses as much as digits as its factorization.

8949649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 49.

The square root of 8949649 is about 2991.5963965749. The cubic root of 8949649 is about 207.6197518465.

The spelling of 8949649 in words is "eight million, nine hundred forty-nine thousand, six hundred forty-nine".