8427945 has 16 divisors (see below), whose sum is σ = 13620672. Its totient is φ = 4449600.

The previous prime is 8427941. The next prime is 8427953. The reversal of 8427945 is 5497248.

It is not a de Polignac number, because 8427945 - 2² = 8427941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8427941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1267 + ... + 4296.

It is an arithmetic number, because the mean of its divisors is an integer number (851292).

Almost surely, 2^8427945 is an apocalyptic number.

It is an amenable number.

8427945 is a deficient number, since it is larger than the sum of its proper divisors (5192727).

8427945 is a wasteful number, since it uses less digits than its factorization.

8427945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672.

The product of its digits is 80640, while the sum is 39.

The square root of 8427945 is about 2903.0923168236. The cubic root of 8427945 is about 203.5044440388.

The spelling of 8427945 in words is "eight million, four hundred twenty-seven thousand, nine hundred forty-five".