8009149 has 2 divisors, whose sum is σ = 8009150. Its totient is φ = 8009148.

The previous prime is 8009147. The next prime is 8009161. The reversal of 8009149 is 9419008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7252249 + 756900 = 2693^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 8009149 - 2¹ = 8009147 is a prime.

Together with 8009147, 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 8009149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8009143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4004574 + 4004575.

It is an arithmetic number, because the mean of its divisors is an integer number (4004575).

Almost surely, 2^8009149 is an apocalyptic number.

It is an amenable number.

8009149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8009149 is an equidigital number, since it uses as much as digits as its factorization.

8009149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 8009149 is about 2830.0439925909. The cubic root of 8009149 is about 200.0762126212.

The spelling of 8009149 in words is "eight million, nine thousand, one hundred forty-nine".