8490309 has 8 divisors (see below), whose sum is σ = 11333952. Its totient is φ = 5653440.

The previous prime is 8490281. The next prime is 8490323. The reversal of 8490309 is 9030948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8490309 - 2²³ = 101701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8490309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8490379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3597 + ... + 5469.

It is an arithmetic number, because the mean of its divisors is an integer number (1416744).

Almost surely, 2^8490309 is an apocalyptic number.

It is an amenable number.

8490309 is a deficient number, since it is larger than the sum of its proper divisors (2843643).

8490309 is a wasteful number, since it uses less digits than its factorization.

8490309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 8490309 is about 2913.8134806470. The cubic root of 8490309 is about 204.0051661514.

The spelling of 8490309 in words is "eight million, four hundred ninety thousand, three hundred nine".