9920597 has 2 divisors, whose sum is σ = 9920598. Its totient is φ = 9920596.

The previous prime is 9920579. The next prime is 9920611. The reversal of 9920597 is 7950299.

Together with previous prime (9920579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6791236 + 3129361 = 2606^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 9920597 - 2¹⁰ = 9919573 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9920507) 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 as a sum of consecutive naturals, namely, 4960298 + 4960299.

It is an arithmetic number, because the mean of its divisors is an integer number (4960299).

Almost surely, 2^9920597 is an apocalyptic number.

It is an amenable number.

9920597 is a deficient number, since it is larger than the sum of its proper divisors (1).

9920597 is an equidigital number, since it uses as much as digits as its factorization.

9920597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 9920597 is about 3149.6979220236. The cubic root of 9920597 is about 214.8717244556.

The spelling of 9920597 in words is "nine million, nine hundred twenty thousand, five hundred ninety-seven".