8242909 has 8 divisors (see below), whose sum is σ = 8755128. Its totient is φ = 7733760.

The previous prime is 8242889. The next prime is 8242919. The reversal of 8242909 is 9092428.

It can be written as a sum of positive squares in 4 ways, for example, as 4452100 + 3790809 = 2110^2 + 1947^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8242909 - 2⁵ = 8242877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8242919) 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, 7239 + ... + 8299.

It is an arithmetic number, because the mean of its divisors is an integer number (1094391).

Almost surely, 2^8242909 is an apocalyptic number.

It is an amenable number.

8242909 is a deficient number, since it is larger than the sum of its proper divisors (512219).

8242909 is a wasteful number, since it uses less digits than its factorization.

8242909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 8242909 is about 2871.0466732535. The cubic root of 8242909 is about 202.0040926531.

The spelling of 8242909 in words is "eight million, two hundred forty-two thousand, nine hundred nine".