40118999 has 2 divisors, whose sum is σ = 40119000. Its totient is φ = 40118998.

The previous prime is 40118993. The next prime is 40119007. The reversal of 40118999 is 99981104.

40118999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40118999 - 2⁴ = 40118983 is a prime.

It is a Sophie Germain 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 (40118993) 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, 20059499 + 20059500.

It is an arithmetic number, because the mean of its divisors is an integer number (20059500).

Almost surely, 2^40118999 is an apocalyptic number.

40118999 is a deficient number, since it is larger than the sum of its proper divisors (1).

40118999 is an equidigital number, since it uses as much as digits as its factorization.

40118999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 40118999 is about 6333.9560307915. The cubic root of 40118999 is about 342.3339959562. Note that the first 3 decimals are identical.

The spelling of 40118999 in words is "forty million, one hundred eighteen thousand, nine hundred ninety-nine".