912915649 has 4 divisors (see below), whose sum is σ = 918961600. Its totient is φ = 906869700.

The previous prime is 912915557. The next prime is 912915719. The reversal of 912915649 is 946519219.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-912915649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 912915599 and 912915608.

It is not an unprimeable number, because it can be changed into a prime (912915349) 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 in 3 ways as a sum of consecutive naturals, for example, 3022749 + ... + 3023050.

It is an arithmetic number, because the mean of its divisors is an integer number (229740400).

Almost surely, 2^912915649 is an apocalyptic number.

It is an amenable number.

912915649 is a deficient number, since it is larger than the sum of its proper divisors (6045951).

912915649 is a wasteful number, since it uses less digits than its factorization.

912915649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6045950.

The product of its digits is 174960, while the sum is 46.

The square root of 912915649 is about 30214.4940219094. The cubic root of 912915649 is about 970.0859558221.

The spelling of 912915649 in words is "nine hundred twelve million, nine hundred fifteen thousand, six hundred forty-nine".