9739679820 has 384 divisors, whose sum is σ = 32167231488. Its totient is φ = 2182118400.

The previous prime is 9739679809. The next prime is 9739679827. The reversal of 9739679820 is 289769379.

It is a super-2 number, since 2×9739679820² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (9739679827) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 46159515 + ... + 46159725.

It is an arithmetic number, because the mean of its divisors is an integer number (83768832).

Almost surely, 2^9739679820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9739679820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16083615744).

9739679820 is an abundant number, since it is smaller than the sum of its proper divisors (22427551668).

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

9739679820 is a wasteful number, since it uses less digits than its factorization.

9739679820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 60.

The square root of 9739679820 is about 98689.8161919456. The cubic root of 9739679820 is about 2135.5753207877.

The spelling of 9739679820 in words is "nine billion, seven hundred thirty-nine million, six hundred seventy-nine thousand, eight hundred twenty".