40776709 has 2 divisors, whose sum is σ = 40776710. Its totient is φ = 40776708.

The previous prime is 40776689. The next prime is 40776713. The reversal of 40776709 is 90767704.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 199809 = 6370^2 + 447^2 .

It is a cyclic number.

It is not a de Polignac number, because 40776709 - 2¹³ = 40768517 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 (40776209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20388354 + 20388355.

It is an arithmetic number, because the mean of its divisors is an integer number (20388355).

Almost surely, 2^40776709 is an apocalyptic number.

It is an amenable number.

40776709 is a deficient number, since it is larger than the sum of its proper divisors (1).

40776709 is an equidigital number, since it uses as much as digits as its factorization.

40776709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 40776709 is about 6385.6643350555. The cubic root of 40776709 is about 344.1946038121.

The spelling of 40776709 in words is "forty million, seven hundred seventy-six thousand, seven hundred nine".