889449644 has 24 divisors (see below), whose sum is σ = 1608566400. Its totient is φ = 429891840.

The previous prime is 889449643. The next prime is 889449661. The reversal of 889449644 is 446944988.

889449644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×889449644² = 1582241338423453472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 889449644.

It is not an unprimeable number, because it can be changed into a prime (889449643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121562 + ... + 128670.

It is an arithmetic number, because the mean of its divisors is an integer number (67023600).

Almost surely, 2^889449644 is an apocalyptic number.

It is an amenable number.

889449644 is a deficient number, since it is larger than the sum of its proper divisors (719116756).

889449644 is a wasteful number, since it uses less digits than its factorization.

889449644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8153 (or 8151 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 56.

The square root of 889449644 is about 29823.6423664180. The cubic root of 889449644 is about 961.7018582411.

The spelling of 889449644 in words is "eight hundred eighty-nine million, four hundred forty-nine thousand, six hundred forty-four".