40793942389 has 2 divisors, whose sum is σ = 40793942390. Its totient is φ = 40793942388.

The previous prime is 40793942377. The next prime is 40793942429. The reversal of 40793942389 is 98324939704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40684907025 + 109035364 = 201705^2 + 10442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40793942389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40793945389) 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, 20396971194 + 20396971195.

It is an arithmetic number, because the mean of its divisors is an integer number (20396971195).

Almost surely, 2^40793942389 is an apocalyptic number.

It is an amenable number.

40793942389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40793942389 is an equidigital number, since it uses as much as digits as its factorization.

40793942389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 40793942389 in words is "forty billion, seven hundred ninety-three million, nine hundred forty-two thousand, three hundred eighty-nine".