712718989 has 2 divisors, whose sum is σ = 712718990. Its totient is φ = 712718988.

The previous prime is 712718987. The next prime is 712719079. The reversal of 712718989 is 989817217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 699338025 + 13380964 = 26445^2 + 3658^2 .

It is a cyclic number.

It is not a de Polignac number, because 712718989 - 2¹ = 712718987 is a prime.

Together with 712718987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712718987) 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, 356359494 + 356359495.

It is an arithmetic number, because the mean of its divisors is an integer number (356359495).

Almost surely, 2^712718989 is an apocalyptic number.

It is an amenable number.

712718989 is a deficient number, since it is larger than the sum of its proper divisors (1).

712718989 is an equidigital number, since it uses as much as digits as its factorization.

712718989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 52.

The square root of 712718989 is about 26696.7973547390. The cubic root of 712718989 is about 893.2494894053.

The spelling of 712718989 in words is "seven hundred twelve million, seven hundred eighteen thousand, nine hundred eighty-nine".