8940649 has 2 divisors, whose sum is σ = 8940650. Its totient is φ = 8940648.

The previous prime is 8940611. The next prime is 8940707. The reversal of 8940649 is 9460498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8450649 + 490000 = 2907^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 8940649 - 2¹³ = 8932457 is a prime.

It is a Chen prime.

8940649 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8940049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4470324 + 4470325.

It is an arithmetic number, because the mean of its divisors is an integer number (4470325).

Almost surely, 2^8940649 is an apocalyptic number.

It is an amenable number.

8940649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8940649 is an equidigital number, since it uses as much as digits as its factorization.

8940649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 8940649 is about 2990.0918046107. The cubic root of 8940649 is about 207.5501325619.

The spelling of 8940649 in words is "eight million, nine hundred forty thousand, six hundred forty-nine".