40193983 has 2 divisors, whose sum is σ = 40193984. Its totient is φ = 40193982.

The previous prime is 40193957. The next prime is 40194017. The reversal of 40193983 is 38939104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40193983 - 2¹³ = 40185791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40193183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20096991 + 20096992.

It is an arithmetic number, because the mean of its divisors is an integer number (20096992).

Almost surely, 2^40193983 is an apocalyptic number.

40193983 is a deficient number, since it is larger than the sum of its proper divisors (1).

40193983 is an equidigital number, since it uses as much as digits as its factorization.

40193983 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 37.

The square root of 40193983 is about 6339.8724750582. The cubic root of 40193983 is about 342.5471418230.

The spelling of 40193983 in words is "forty million, one hundred ninety-three thousand, nine hundred eighty-three".