912464639 has 4 divisors (see below), whose sum is σ = 912824880. Its totient is φ = 912104400.

The previous prime is 912464611. The next prime is 912464669. The reversal of 912464639 is 936464219.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936464219 = 2953 ⋅317123.

It is a cyclic number.

It is not a de Polignac number, because 912464639 - 2¹² = 912460543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 912464639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912464669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176294 + ... + 181395.

It is an arithmetic number, because the mean of its divisors is an integer number (228206220).

Almost surely, 2^912464639 is an apocalyptic number.

912464639 is a deficient number, since it is larger than the sum of its proper divisors (360241).

912464639 is a wasteful number, since it uses less digits than its factorization.

912464639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360240.

The product of its digits is 279936, while the sum is 44.

The square root of 912464639 is about 30207.0296288794. The cubic root of 912464639 is about 969.9261781776.

The spelling of 912464639 in words is "nine hundred twelve million, four hundred sixty-four thousand, six hundred thirty-nine".