40126393 has 2 divisors, whose sum is σ = 40126394. Its totient is φ = 40126392.

The previous prime is 40126379. The next prime is 40126399. The reversal of 40126393 is 39362104.

40126393 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., 25280784 + 14845609 = 5028^2 + 3853^2 .

It is a cyclic number.

It is not a de Polignac number, because 40126393 - 2⁹ = 40125881 is a prime.

It is a super-2 number, since 2×40126393² = 3220254830380898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40126399) 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, 20063196 + 20063197.

It is an arithmetic number, because the mean of its divisors is an integer number (20063197).

Almost surely, 2^40126393 is an apocalyptic number.

It is an amenable number.

40126393 is a deficient number, since it is larger than the sum of its proper divisors (1).

40126393 is an equidigital number, since it uses as much as digits as its factorization.

40126393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 40126393 is about 6334.5396833551. The cubic root of 40126393 is about 342.3550255776.

Adding to 40126393 its reverse (39362104), we get a palindrome (79488497).

The spelling of 40126393 in words is "forty million, one hundred twenty-six thousand, three hundred ninety-three".