9997895 has 24 divisors (see below), whose sum is σ = 13167360. Its totient is φ = 7277760.

The previous prime is 9997879. The next prime is 9997913. The reversal of 9997895 is 5987999.

It is not a de Polignac number, because 9997895 - 2⁴ = 9997879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9997895.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52250 + ... + 52440.

It is an arithmetic number, because the mean of its divisors is an integer number (548640).

Almost surely, 2^9997895 is an apocalyptic number.

9997895 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

9997895 is a deficient number, since it is larger than the sum of its proper divisors (3169465).

9997895 is a wasteful number, since it uses less digits than its factorization.

9997895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 244 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 56.

The square root of 9997895 is about 3161.9448129276. The cubic root of 9997895 is about 215.4283509923.

The spelling of 9997895 in words is "nine million, nine hundred ninety-seven thousand, eight hundred ninety-five".