40669757 has 2 divisors, whose sum is σ = 40669758. Its totient is φ = 40669756.

The previous prime is 40669693. The next prime is 40669777. The reversal of 40669757 is 75796604.

40669757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29474041 + 11195716 = 5429^2 + 3346^2 .

It is a cyclic number.

It is not a de Polignac number, because 40669757 - 2⁶ = 40669693 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 (40669777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20334878 + 20334879.

It is an arithmetic number, because the mean of its divisors is an integer number (20334879).

Almost surely, 2^40669757 is an apocalyptic number.

It is an amenable number.

40669757 is a deficient number, since it is larger than the sum of its proper divisors (1).

40669757 is an equidigital number, since it uses as much as digits as its factorization.

40669757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 40669757 is about 6377.2844534331. The cubic root of 40669757 is about 343.8934144504.

The spelling of 40669757 in words is "forty million, six hundred sixty-nine thousand, seven hundred fifty-seven".