8427407 has 4 divisors (see below), whose sum is σ = 8793840. Its totient is φ = 8060976.

The previous prime is 8427403. The next prime is 8427413. The reversal of 8427407 is 7047248.

8427407 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8427407 - 2² = 8427403 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 (8427401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183182 + ... + 183227.

It is an arithmetic number, because the mean of its divisors is an integer number (2198460).

Almost surely, 2^8427407 is an apocalyptic number.

8427407 is a deficient number, since it is larger than the sum of its proper divisors (366433).

8427407 is a wasteful number, since it uses less digits than its factorization.

8427407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366432.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 8427407 is about 2902.9996555287. Note that the first 3 decimals coincide. The cubic root of 8427407 is about 203.5001136942.

The spelling of 8427407 in words is "eight million, four hundred twenty-seven thousand, four hundred seven".