8240947 has 24 divisors (see below), whose sum is σ = 10129280. Its totient is φ = 6692400.

The previous prime is 8240929. The next prime is 8240957. The reversal of 8240947 is 7490428.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-8240947 is a prime.

It is a Duffinian number.

8240947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8240957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265822 + ... + 265852.

Almost surely, 2^8240947 is an apocalyptic number.

8240947 is a deficient number, since it is larger than the sum of its proper divisors (1888333).

8240947 is a wasteful number, since it uses less digits than its factorization.

8240947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 8240947 is about 2870.7049656835. The cubic root of 8240947 is about 201.9880641903.

The spelling of 8240947 in words is "eight million, two hundred forty thousand, nine hundred forty-seven".