8909501 has 2 divisors, whose sum is σ = 8909502. Its totient is φ = 8909500.

The previous prime is 8909497. The next prime is 8909503. The reversal of 8909501 is 1059098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8008900 + 900601 = 2830^2 + 949^2 .

It is a cyclic number.

It is not a de Polignac number, because 8909501 - 2² = 8909497 is a prime.

Together with 8909503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8909503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4454750 + 4454751.

It is an arithmetic number, because the mean of its divisors is an integer number (4454751).

Almost surely, 2^8909501 is an apocalyptic number.

It is an amenable number.

8909501 is a deficient number, since it is larger than the sum of its proper divisors (1).

8909501 is an equidigital number, since it uses as much as digits as its factorization.

8909501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 8909501 is about 2984.8787245046. The cubic root of 8909501 is about 207.3088266808.

The spelling of 8909501 in words is "eight million, nine hundred nine thousand, five hundred one".