9927726965 has 64 divisors (see below), whose sum is σ = 13436430336. Its totient is φ = 6994086912.

The previous prime is 9927726937. The next prime is 9927726979. The reversal of 9927726965 is 5696277299.

It is a happy number.

It is not a de Polignac number, because 9927726965 - 2⁶ = 9927726901 is a prime.

It is a super-2 number, since 2×9927726965² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9927726898 and 9927726907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44518844 + ... + 44519066.

It is an arithmetic number, because the mean of its divisors is an integer number (209944224).

Almost surely, 2^9927726965 is an apocalyptic number.

It is an amenable number.

9927726965 is a deficient number, since it is larger than the sum of its proper divisors (3508703371).

9927726965 is a wasteful number, since it uses less digits than its factorization.

9927726965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its digits is 25719120, while the sum is 62.

The square root of 9927726965 is about 99637.9795308998. The cubic root of 9927726965 is about 2149.2318846184.

The spelling of 9927726965 in words is "nine billion, nine hundred twenty-seven million, seven hundred twenty-six thousand, nine hundred sixty-five".