9997723895 has 8 divisors (see below), whose sum is σ = 12018811104. Its totient is φ = 7983817504.

The previous prime is 9997723889. The next prime is 9997723903. The reversal of 9997723895 is 5983277999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9997723895 - 2¹⁰ = 9997722871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1792139 + ... + 1797708.

It is an arithmetic number, because the mean of its divisors is an integer number (1502351388).

Almost surely, 2^9997723895 is an apocalyptic number.

9997723895 is a deficient number, since it is larger than the sum of its proper divisors (2021087209).

9997723895 is a wasteful number, since it uses less digits than its factorization.

9997723895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590409.

The product of its digits is 77157360, while the sum is 68.

The square root of 9997723895 is about 99988.6188273445. The cubic root of 9997723895 is about 2154.2712203098.

The spelling of 9997723895 in words is "nine billion, nine hundred ninety-seven million, seven hundred twenty-three thousand, eight hundred ninety-five".