9978601247 has 8 divisors (see below), whose sum is σ = 10144038240. Its totient is φ = 9813224160.

The previous prime is 9978601229. The next prime is 9978601277. The reversal of 9978601247 is 7421068799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9978601247 - 2¹⁸ = 9978339103 is a prime.

It is a super-3 number, since 3×9978601247³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978601277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428654 + ... + 451332.

It is an arithmetic number, because the mean of its divisors is an integer number (1268004780).

Almost surely, 2^9978601247 is an apocalyptic number.

9978601247 is a deficient number, since it is larger than the sum of its proper divisors (165436993).

9978601247 is a wasteful number, since it uses less digits than its factorization.

9978601247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29953.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 9978601247 is about 99892.9489353478. The cubic root of 9978601247 is about 2152.8968520563.

The spelling of 9978601247 in words is "nine billion, nine hundred seventy-eight million, six hundred one thousand, two hundred forty-seven".