40212793 has 2 divisors, whose sum is σ = 40212794. Its totient is φ = 40212792.

The previous prime is 40212791. The next prime is 40212833. The reversal of 40212793 is 39721204.

40212793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23541904 + 16670889 = 4852^2 + 4083^2 .

It is a cyclic number.

It is not a de Polignac number, because 40212793 - 2¹ = 40212791 is a prime.

Together with 40212791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40212791) 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, 20106396 + 20106397.

It is an arithmetic number, because the mean of its divisors is an integer number (20106397).

Almost surely, 2^40212793 is an apocalyptic number.

It is an amenable number.

40212793 is a deficient number, since it is larger than the sum of its proper divisors (1).

40212793 is an equidigital number, since it uses as much as digits as its factorization.

40212793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 40212793 is about 6341.3557698650. The cubic root of 40212793 is about 342.6005686165.

Adding to 40212793 its reverse (39721204), we get a palindrome (79933997).

The spelling of 40212793 in words is "forty million, two hundred twelve thousand, seven hundred ninety-three".