9976997 has 4 divisors (see below), whose sum is σ = 10016076. Its totient is φ = 9937920.

The previous prime is 9976937. The next prime is 9977021. The reversal of 9976997 is 7996799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7996799 = 53 ⋅150883.

It can be written as a sum of positive squares in 2 ways, for example, as 8473921 + 1503076 = 2911^2 + 1226^2 .

It is a cyclic number.

It is not a de Polignac number, because 9976997 - 2⁶ = 9976933 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 (9976927) 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 3 ways as a sum of consecutive naturals, for example, 19154 + ... + 19667.

It is an arithmetic number, because the mean of its divisors is an integer number (2504019).

Almost surely, 2^9976997 is an apocalyptic number.

It is an amenable number.

9976997 is a deficient number, since it is larger than the sum of its proper divisors (39079).

9976997 is a wasteful number, since it uses less digits than its factorization.

9976997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39078.

The product of its digits is 1928934, while the sum is 56.

The square root of 9976997 is about 3158.6384725068. The cubic root of 9976997 is about 215.2781473046.

The spelling of 9976997 in words is "nine million, nine hundred seventy-six thousand, nine hundred ninety-seven".