8445939 has 4 divisors (see below), whose sum is σ = 11261256. Its totient is φ = 5630624.

The previous prime is 8445929. The next prime is 8445949. The reversal of 8445939 is 9395448.

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

It is an interprime number because it is at equal distance from previous prime (8445929) and next prime (8445949).

It is a cyclic number.

It is not a de Polignac number, because 8445939 - 2⁵ = 8445907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8445939.

It is not an unprimeable number, because it can be changed into a prime (8445929) 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, 1407654 + ... + 1407659.

It is an arithmetic number, because the mean of its divisors is an integer number (2815314).

Almost surely, 2^8445939 is an apocalyptic number.

8445939 is a deficient number, since it is larger than the sum of its proper divisors (2815317).

8445939 is a wasteful number, since it uses less digits than its factorization.

8445939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815316.

The product of its digits is 155520, while the sum is 42.

The square root of 8445939 is about 2906.1897735695. The cubic root of 8445939 is about 203.6491711335.

The spelling of 8445939 in words is "eight million, four hundred forty-five thousand, nine hundred thirty-nine".