9929695997 has 4 divisors (see below), whose sum is σ = 10693518780. Its totient is φ = 9165873216.

The previous prime is 9929695981. The next prime is 9929696011. The reversal of 9929695997 is 7995969299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7995969299 = 389 ⋅20555191.

It can be written as a sum of positive squares in 2 ways, for example, as 3143396356 + 6786299641 = 56066^2 + 82379^2 .

It is a cyclic number.

It is not a de Polignac number, because 9929695997 - 2⁴ = 9929695981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9929695927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381911372 + ... + 381911397.

It is an arithmetic number, because the mean of its divisors is an integer number (2673379695).

Almost surely, 2^9929695997 is an apocalyptic number.

It is an amenable number.

9929695997 is a deficient number, since it is larger than the sum of its proper divisors (763822783).

9929695997 is a wasteful number, since it uses less digits than its factorization.

9929695997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763822782.

The product of its digits is 223205220, while the sum is 74.

The square root of 9929695997 is about 99647.8599720034. The cubic root of 9929695997 is about 2149.3739657017.

The spelling of 9929695997 in words is "nine billion, nine hundred twenty-nine million, six hundred ninety-five thousand, nine hundred ninety-seven".