9878397032 has 16 divisors (see below), whose sum is σ = 21167993760. Its totient is φ = 4233598704.

The previous prime is 9878397017. The next prime is 9878397037. The reversal of 9878397032 is 2307938789.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 176399947 = 9878397032 / (9 + 8 + 7 + 8 + 3 + 9 + 7 + 0 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (9878397037) by changing a digit.

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, 88199918 + ... + 88200029.

It is an arithmetic number, because the mean of its divisors is an integer number (1322999610).

Almost surely, 2^9878397032 is an apocalyptic number.

It is an amenable number.

9878397032 is an abundant number, since it is smaller than the sum of its proper divisors (11289596728).

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

9878397032 is a wasteful number, since it uses less digits than its factorization.

9878397032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176399960 (or 176399956 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 56.

The square root of 9878397032 is about 99390.1254250139. The cubic root of 9878397032 is about 2145.6661958109. Note that the first 3 decimals are identical.

The spelling of 9878397032 in words is "nine billion, eight hundred seventy-eight million, three hundred ninety-seven thousand, thirty-two".