40199983 has 2 divisors, whose sum is σ = 40199984. Its totient is φ = 40199982.

The previous prime is 40199981. The next prime is 40200071. The reversal of 40199983 is 38999104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40199983 - 2¹ = 40199981 is a prime.

Together with 40199981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40199981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20099991 + 20099992.

It is an arithmetic number, because the mean of its divisors is an integer number (20099992).

Almost surely, 2^40199983 is an apocalyptic number.

40199983 is a deficient number, since it is larger than the sum of its proper divisors (1).

40199983 is an equidigital number, since it uses as much as digits as its factorization.

40199983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 40199983 is about 6340.3456530382. The cubic root of 40199983 is about 342.5641856725.

The spelling of 40199983 in words is "forty million, one hundred ninety-nine thousand, nine hundred eighty-three".