9860547121 has 8 divisors (see below), whose sum is σ = 9901391400. Its totient is φ = 9819734400.

The previous prime is 9860547119. The next prime is 9860547139. The reversal of 9860547121 is 1217450689.

9860547121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 637057600 + 9223489521 = 25240^2 + 96039^2 .

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 9860547121 - 2¹ = 9860547119 is a prime.

It is a super-2 number, since 2×9860547121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9860547821) 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, 776221 + ... + 788821.

It is an arithmetic number, because the mean of its divisors is an integer number (1237673925).

Almost surely, 2^9860547121 is an apocalyptic number.

It is an amenable number.

9860547121 is a deficient number, since it is larger than the sum of its proper divisors (40844279).

9860547121 is a wasteful number, since it uses less digits than its factorization.

9860547121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15779.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 9860547121 is about 99300.2876179118. The cubic root of 9860547121 is about 2144.3730358453.

The spelling of 9860547121 in words is "nine billion, eight hundred sixty million, five hundred forty-seven thousand, one hundred twenty-one".