919424644 has 12 divisors (see below), whose sum is σ = 1609344268. Its totient is φ = 459612000.

The previous prime is 919424621. The next prime is 919424647. The reversal of 919424644 is 446424919.

919424644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 335622400 + 583802244 = 18320^2 + 24162^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 919424644.

It is not an unprimeable number, because it can be changed into a prime (919424647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127 + ... + 42934.

Almost surely, 2^919424644 is an apocalyptic number.

It is an amenable number.

919424644 is a deficient number, since it is larger than the sum of its proper divisors (689919624).

919424644 is a wasteful number, since it uses less digits than its factorization.

919424644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50166 (or 50164 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 919424644 is about 30322.0158300862. The cubic root of 919424644 is about 972.3860358168.

The spelling of 919424644 in words is "nine hundred nineteen million, four hundred twenty-four thousand, six hundred forty-four".