9978423052 has 24 divisors (see below), whose sum is σ = 19264164192. Its totient is φ = 4493097600.

The previous prime is 9978422953. The next prime is 9978423053. The reversal of 9978423052 is 2503248799.

It is a junction number, because it is equal to n+sod(n) for n = 9978422987 and 9978423005.

It is not an unprimeable number, because it can be changed into a prime (9978423053) 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, 2338024 + ... + 2342287.

It is an arithmetic number, because the mean of its divisors is an integer number (802673508).

Almost surely, 2^9978423052 is an apocalyptic number.

It is an amenable number.

9978423052 is a deficient number, since it is larger than the sum of its proper divisors (9285741140).

9978423052 is a wasteful number, since it uses less digits than its factorization.

9978423052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680369 (or 4680367 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 9978423052 is about 99892.0570015454. The cubic root of 9978423052 is about 2152.8840367085.

The spelling of 9978423052 in words is "nine billion, nine hundred seventy-eight million, four hundred twenty-three thousand, fifty-two".