8445403 has 4 divisors (see below), whose sum is σ = 8524440. Its totient is φ = 8366368.

The previous prime is 8445377. The next prime is 8445419. The reversal of 8445403 is 3045448.

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 8445403 - 2¹³ = 8437211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8445433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39358 + ... + 39571.

It is an arithmetic number, because the mean of its divisors is an integer number (2131110).

Almost surely, 2^8445403 is an apocalyptic number.

8445403 is a deficient number, since it is larger than the sum of its proper divisors (79037).

8445403 is a wasteful number, since it uses less digits than its factorization.

8445403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79036.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 8445403 is about 2906.0975551416. The cubic root of 8445403 is about 203.6448630171.

The spelling of 8445403 in words is "eight million, four hundred forty-five thousand, four hundred three".