39868811 has 2 divisors, whose sum is σ = 39868812. Its totient is φ = 39868810.

The previous prime is 39868799. The next prime is 39868847. The reversal of 39868811 is 11886893.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39868811 - 2¹⁰ = 39867787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39868861) 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, 19934405 + 19934406.

It is an arithmetic number, because the mean of its divisors is an integer number (19934406).

Almost surely, 2^39868811 is an apocalyptic number.

39868811 is a deficient number, since it is larger than the sum of its proper divisors (1).

39868811 is an equidigital number, since it uses as much as digits as its factorization.

39868811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 44.

The square root of 39868811 is about 6314.1754014281. The cubic root of 39868811 is about 341.6208964533.

The spelling of 39868811 in words is "thirty-nine million, eight hundred sixty-eight thousand, eight hundred eleven".