8407845 has 12 divisors (see below), whose sum is σ = 14573676. Its totient is φ = 4484160.

The previous prime is 8407837. The next prime is 8407849. The reversal of 8407845 is 5487048.

It can be written as a sum of positive squares in 2 ways, for example, as 1004004 + 7403841 = 1002^2 + 2721^2 .

It is not a de Polignac number, because 8407845 - 2³ = 8407837 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8407849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93376 + ... + 93465.

It is an arithmetic number, because the mean of its divisors is an integer number (1214473).

Almost surely, 2^8407845 is an apocalyptic number.

It is an amenable number.

8407845 is a deficient number, since it is larger than the sum of its proper divisors (6165831).

8407845 is a wasteful number, since it uses less digits than its factorization.

8407845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186852 (or 186849 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 8407845 is about 2899.6284244710. The cubic root of 8407845 is about 203.3425344458.

The spelling of 8407845 in words is "eight million, four hundred seven thousand, eight hundred forty-five".