8445487 has 4 divisors (see below), whose sum is σ = 8489440. Its totient is φ = 8401536.

The previous prime is 8445473. The next prime is 8445517. The reversal of 8445487 is 7845448.

8445487 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-8445487 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 (8445427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21687 + ... + 22072.

It is an arithmetic number, because the mean of its divisors is an integer number (2122360).

Almost surely, 2^8445487 is an apocalyptic number.

8445487 is a deficient number, since it is larger than the sum of its proper divisors (43953).

8445487 is a wasteful number, since it uses less digits than its factorization.

8445487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43952.

The product of its digits is 143360, while the sum is 40.

The square root of 8445487 is about 2906.1120074767. The cubic root of 8445487 is about 203.6455381817.

The spelling of 8445487 in words is "eight million, four hundred forty-five thousand, four hundred eighty-seven".