40140193 has 2 divisors, whose sum is σ = 40140194. Its totient is φ = 40140192.

The previous prime is 40140187. The next prime is 40140197. The reversal of 40140193 is 39104104.

40140193 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 can be written as a sum of positive squares in only one way, i.e., 38031889 + 2108304 = 6167^2 + 1452^2 .

It is a cyclic number.

It is not a de Polignac number, because 40140193 - 2⁵ = 40140161 is a prime.

It is a super-2 number, since 2×40140193² = 3222470188154498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40140197) 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, 20070096 + 20070097.

It is an arithmetic number, because the mean of its divisors is an integer number (20070097).

Almost surely, 2^40140193 is an apocalyptic number.

It is an amenable number.

40140193 is a deficient number, since it is larger than the sum of its proper divisors (1).

40140193 is an equidigital number, since it uses as much as digits as its factorization.

40140193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40140193 is about 6335.6288559227. The cubic root of 40140193 is about 342.3942678941.

Adding to 40140193 its reverse (39104104), we get a palindrome (79244297).

The spelling of 40140193 in words is "forty million, one hundred forty thousand, one hundred ninety-three".