9990137 has 2 divisors, whose sum is σ = 9990138. Its totient is φ = 9990136.

The previous prime is 9990133. The next prime is 9990163. The reversal of 9990137 is 7310999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9265936 + 724201 = 3044^2 + 851^2 .

It is a cyclic number.

It is not a de Polignac number, because 9990137 - 2² = 9990133 is a prime.

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 9990137.

It is not a weakly prime, because it can be changed into another prime (9990131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995068 + 4995069.

It is an arithmetic number, because the mean of its divisors is an integer number (4995069).

Almost surely, 2^9990137 is an apocalyptic number.

It is an amenable number.

9990137 is a deficient number, since it is larger than the sum of its proper divisors (1).

9990137 is an equidigital number, since it uses as much as digits as its factorization.

9990137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 9990137 is about 3160.7177982224. The cubic root of 9990137 is about 215.3726150725.

The spelling of 9990137 in words is "nine million, nine hundred ninety thousand, one hundred thirty-seven".