40199843 has 2 divisors, whose sum is σ = 40199844. Its totient is φ = 40199842.

The previous prime is 40199821. The next prime is 40199851. The reversal of 40199843 is 34899104.

40199843 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 is a cyclic number.

It is not a de Polignac number, because 40199843 - 2⁸ = 40199587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40199797 and 40199806.

It is not a weakly prime, because it can be changed into another prime (40199443) 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, 20099921 + 20099922.

It is an arithmetic number, because the mean of its divisors is an integer number (20099922).

Almost surely, 2^40199843 is an apocalyptic number.

40199843 is a deficient number, since it is larger than the sum of its proper divisors (1).

40199843 is an equidigital number, since it uses as much as digits as its factorization.

40199843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 40199843 is about 6340.3346126210. The cubic root of 40199843 is about 342.5637880020.

The spelling of 40199843 in words is "forty million, one hundred ninety-nine thousand, eight hundred forty-three".