989896144 has 20 divisors (see below), whose sum is σ = 1935522820. Its totient is φ = 490406400.

The previous prime is 989896109. The next prime is 989896153. The reversal of 989896144 is 441698989.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 859662400 + 130233744 = 29320^2 + 11412^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282057 + ... + 285544.

It is an arithmetic number, because the mean of its divisors is an integer number (96776141).

Almost surely, 2^989896144 is an apocalyptic number.

It is an amenable number.

989896144 is a deficient number, since it is larger than the sum of its proper divisors (945626676).

989896144 is a wasteful number, since it uses less digits than its factorization.

989896144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567718 (or 567712 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 58.

The square root of 989896144 is about 31462.6150216412. The cubic root of 989896144 is about 996.6206407955.

The spelling of 989896144 in words is "nine hundred eighty-nine million, eight hundred ninety-six thousand, one hundred forty-four".