913989689 has 2 divisors, whose sum is σ = 913989690. Its totient is φ = 913989688.

The previous prime is 913989667. The next prime is 913989719. The reversal of 913989689 is 986989319.

913989689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 845646400 + 68343289 = 29080^2 + 8267^2 .

It is a cyclic number.

It is not a de Polignac number, because 913989689 - 2²⁸ = 645554233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (913989619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456994844 + 456994845.

It is an arithmetic number, because the mean of its divisors is an integer number (456994845).

Almost surely, 2^913989689 is an apocalyptic number.

It is an amenable number.

913989689 is a deficient number, since it is larger than the sum of its proper divisors (1).

913989689 is an equidigital number, since it uses as much as digits as its factorization.

913989689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 62.

The square root of 913989689 is about 30232.2623863977. The cubic root of 913989689 is about 970.4662402391.

The spelling of 913989689 in words is "nine hundred thirteen million, nine hundred eighty-nine thousand, six hundred eighty-nine".