9997910 has 16 divisors (see below), whose sum is σ = 19380816. Its totient is φ = 3691488.

The previous prime is 9997879. The next prime is 9997913. The reversal of 9997910 is 197999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997913) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38324 + ... + 38583.

It is an arithmetic number, because the mean of its divisors is an integer number (1211301).

Almost surely, 2^9997910 is an apocalyptic number.

9997910 is a deficient number, since it is larger than the sum of its proper divisors (9382906).

9997910 is a wasteful number, since it uses less digits than its factorization.

9997910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76927.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 9997910 is about 3161.9471848847. The cubic root of 9997910 is about 215.4284587291.

The spelling of 9997910 in words is "nine million, nine hundred ninety-seven thousand, nine hundred ten".