913906407889 has 2 divisors, whose sum is σ = 913906407890. Its totient is φ = 913906407888.

The previous prime is 913906407881. The next prime is 913906407917. The reversal of 913906407889 is 988704609319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 911436814864 + 2469593025 = 954692^2 + 49695^2 .

It is a cyclic number.

It is not a de Polignac number, because 913906407889 - 2³ = 913906407881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 913906407889.

It is not a weakly prime, because it can be changed into another prime (913906407881) 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, 456953203944 + 456953203945.

It is an arithmetic number, because the mean of its divisors is an integer number (456953203945).

Almost surely, 2^913906407889 is an apocalyptic number.

It is an amenable number.

913906407889 is a deficient number, since it is larger than the sum of its proper divisors (1).

913906407889 is an equidigital number, since it uses as much as digits as its factorization.

913906407889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 64.

The spelling of 913906407889 in words is "nine hundred thirteen billion, nine hundred six million, four hundred seven thousand, eight hundred eighty-nine".