9709279713 has 24 divisors (see below), whose sum is σ = 16050954816. Its totient is φ = 5540220000.

The previous prime is 9709279711. The next prime is 9709279771. The reversal of 9709279713 is 3179729079.

It is a happy number.

It is not a de Polignac number, because 9709279713 - 2¹ = 9709279711 is a prime.

It is a super-2 number, since 2×9709279713² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9709279713.

It is not an unprimeable number, because it can be changed into a prime (9709279711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65763 + ... + 154088.

It is an arithmetic number, because the mean of its divisors is an integer number (668789784).

Almost surely, 2^9709279713 is an apocalyptic number.

It is an amenable number.

9709279713 is a deficient number, since it is larger than the sum of its proper divisors (6341675103).

9709279713 is a wasteful number, since it uses less digits than its factorization.

9709279713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220565 (or 220562 counting only the distinct ones).

The product of its (nonzero) digits is 1500282, while the sum is 54.

The square root of 9709279713 is about 98535.6773610452. The cubic root of 9709279713 is about 2133.3511073036.

The spelling of 9709279713 in words is "nine billion, seven hundred nine million, two hundred seventy-nine thousand, seven hundred thirteen".