9660399144 has 32 divisors (see below), whose sum is σ = 26346543840. Its totient is φ = 2927393600.

The previous prime is 9660399143. The next prime is 9660399157. The reversal of 9660399144 is 4419930669.

It is not an unprimeable number, because it can be changed into a prime (9660399143) 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, 18295947 + ... + 18296474.

It is an arithmetic number, because the mean of its divisors is an integer number (823329495).

Almost surely, 2^9660399144 is an apocalyptic number.

It is an amenable number.

9660399144 is an abundant number, since it is smaller than the sum of its proper divisors (16686144696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9660399144 is a wasteful number, since it uses less digits than its factorization.

9660399144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36592441 (or 36592437 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 9660399144 is about 98287.3295191196. The cubic root of 9660399144 is about 2129.7650224597.

It can be divided in two parts, 9660 and 399144, that added together give a palindrome (408804).

The spelling of 9660399144 in words is "nine billion, six hundred sixty million, three hundred ninety-nine thousand, one hundred forty-four".