40423013093 has 2 divisors, whose sum is σ = 40423013094. Its totient is φ = 40423013092.

The previous prime is 40423013041. The next prime is 40423013201. The reversal of 40423013093 is 39031032404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40211077729 + 211935364 = 200527^2 + 14558^2 .

It is a cyclic number.

It is not a de Polignac number, because 40423013093 - 2²⁶ = 40355904229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40423013003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211506546 + 20211506547.

It is an arithmetic number, because the mean of its divisors is an integer number (20211506547).

Almost surely, 2^40423013093 is an apocalyptic number.

It is an amenable number.

40423013093 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423013093 is an equidigital number, since it uses as much as digits as its factorization.

40423013093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 40423013093 its reverse (39031032404), we get a palindrome (79454045497).

The spelling of 40423013093 in words is "forty billion, four hundred twenty-three million, thirteen thousand, ninety-three".