912718989 has 128 divisors (see below), whose sum is σ = 1745694720. Its totient is φ = 458535168.

The previous prime is 912718981. The next prime is 912718993. The reversal of 912718989 is 989817219.

It is not a de Polignac number, because 912718989 - 2³ = 912718981 is a prime.

Its product of digits (653184) is a multiple of the sum of its prime factors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912718981) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5599422 + ... + 5599584.

It is an arithmetic number, because the mean of its divisors is an integer number (13638240).

Almost surely, 2^912718989 is an apocalyptic number.

It is an amenable number.

912718989 is a deficient number, since it is larger than the sum of its proper divisors (832975731).

912718989 is a wasteful number, since it uses less digits than its factorization.

912718989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 282 counting only the distinct ones).

The product of its digits is 653184, while the sum is 54.

The square root of 912718989 is about 30211.2394482583. The cubic root of 912718989 is about 970.0162922831.

The spelling of 912718989 in words is "nine hundred twelve million, seven hundred eighteen thousand, nine hundred eighty-nine".