40864422089 has 2 divisors, whose sum is σ = 40864422090. Its totient is φ = 40864422088.

The previous prime is 40864422037. The next prime is 40864422127. The reversal of 40864422089 is 98022446804.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39092012089 + 1772410000 = 197717^2 + 42100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40864422089 is a prime.

It is a super-2 number, since 2×40864422089² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40864422289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20432211044 + 20432211045.

It is an arithmetic number, because the mean of its divisors is an integer number (20432211045).

Almost surely, 2^40864422089 is an apocalyptic number.

It is an amenable number.

40864422089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40864422089 is an equidigital number, since it uses as much as digits as its factorization.

40864422089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 40864422089 in words is "forty billion, eight hundred sixty-four million, four hundred twenty-two thousand, eighty-nine".