40816999 has 2 divisors, whose sum is σ = 40817000. Its totient is φ = 40816998.

The previous prime is 40816981. The next prime is 40817011. The reversal of 40816999 is 99961804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40816999 - 2⁹ = 40816487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40816939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20408499 + 20408500.

It is an arithmetic number, because the mean of its divisors is an integer number (20408500).

Almost surely, 2^40816999 is an apocalyptic number.

40816999 is a deficient number, since it is larger than the sum of its proper divisors (1).

40816999 is an equidigital number, since it uses as much as digits as its factorization.

40816999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 40816999 is about 6388.8182788369. The cubic root of 40816999 is about 344.3079286003.

The spelling of 40816999 in words is "forty million, eight hundred sixteen thousand, nine hundred ninety-nine".