9899501 has 2 divisors, whose sum is σ = 9899502. Its totient is φ = 9899500.

The previous prime is 9899497. The next prime is 9899531. The reversal of 9899501 is 1059989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6100900 + 3798601 = 2470^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 9899501 - 2² = 9899497 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9899531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949750 + 4949751.

It is an arithmetic number, because the mean of its divisors is an integer number (4949751).

Almost surely, 2^9899501 is an apocalyptic number.

It is an amenable number.

9899501 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899501 is an equidigital number, since it uses as much as digits as its factorization.

9899501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 9899501 is about 3146.3472472059. The cubic root of 9899501 is about 214.7193092071.

It can be divided in two parts, 98 and 99501, that added together give a palindrome (99599).

The spelling of 9899501 in words is "nine million, eight hundred ninety-nine thousand, five hundred one".