9980237 has 2 divisors, whose sum is σ = 9980238. Its totient is φ = 9980236.

The previous prime is 9980231. The next prime is 9980239. The reversal of 9980237 is 7320899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7946761 + 2033476 = 2819^2 + 1426^2 .

It is a cyclic number.

It is not a de Polignac number, because 9980237 - 2⁴ = 9980221 is a prime.

Together with 9980239, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9980237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9980231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990118 + 4990119.

It is an arithmetic number, because the mean of its divisors is an integer number (4990119).

Almost surely, 2^9980237 is an apocalyptic number.

It is an amenable number.

9980237 is a deficient number, since it is larger than the sum of its proper divisors (1).

9980237 is an equidigital number, since it uses as much as digits as its factorization.

9980237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 9980237 is about 3159.1513100831. The cubic root of 9980237 is about 215.3014484277.

The spelling of 9980237 in words is "nine million, nine hundred eighty thousand, two hundred thirty-seven".