40840223386889 has 2 divisors, whose sum is σ = 40840223386890. Its totient is φ = 40840223386888.

The previous prime is 40840223386883. The next prime is 40840223386957. The reversal of 40840223386889 is 98868332204804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40393587804025 + 446635582864 = 6355595^2 + 668308^2 .

It is a cyclic number.

It is not a de Polignac number, because 40840223386889 - 2³² = 40835928419593 is a prime.

It is not a weakly prime, because it can be changed into another prime (40840223386883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20420111693444 + 20420111693445.

It is an arithmetic number, because the mean of its divisors is an integer number (20420111693445).

Almost surely, 2^{40840223386889} is an apocalyptic number.

It is an amenable number.

40840223386889 is a deficient number, since it is larger than the sum of its proper divisors (1).

40840223386889 is an equidigital number, since it uses as much as digits as its factorization.

40840223386889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127401984, while the sum is 65.

The spelling of 40840223386889 in words is "forty trillion, eight hundred forty billion, two hundred twenty-three million, three hundred eighty-six thousand, eight hundred eighty-nine".