9684377021 has 16 divisors (see below), whose sum is σ = 10676736576. Its totient is φ = 8710800000.

The previous prime is 9684377011. The next prime is 9684377023. The reversal of 9684377021 is 1207734869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9684377021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9684377023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2710166 + ... + 2713736.

It is an arithmetic number, because the mean of its divisors is an integer number (667296036).

Almost surely, 2^9684377021 is an apocalyptic number.

It is an amenable number.

9684377021 is a deficient number, since it is larger than the sum of its proper divisors (992359555).

9684377021 is a wasteful number, since it uses less digits than its factorization.

9684377021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 9684377021 is about 98409.2323971689. The cubic root of 9684377021 is about 2131.5256485018.

The spelling of 9684377021 in words is "nine billion, six hundred eighty-four million, three hundred seventy-seven thousand, twenty-one".