40855699 has 2 divisors, whose sum is σ = 40855700. Its totient is φ = 40855698.

The previous prime is 40855697. The next prime is 40855723. The reversal of 40855699 is 99655804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40855699 - 2¹ = 40855697 is a prime.

Together with 40855697, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40855697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20427849 + 20427850.

It is an arithmetic number, because the mean of its divisors is an integer number (20427850).

Almost surely, 2^40855699 is an apocalyptic number.

40855699 is a deficient number, since it is larger than the sum of its proper divisors (1).

40855699 is an equidigital number, since it uses as much as digits as its factorization.

40855699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 40855699 is about 6391.8462903922. The cubic root of 40855699 is about 344.4167109555.

The spelling of 40855699 in words is "forty million, eight hundred fifty-five thousand, six hundred ninety-nine".