8918839 has 4 divisors (see below), whose sum is σ = 9052024. Its totient is φ = 8785656.

The previous prime is 8918831. The next prime is 8918843. The reversal of 8918839 is 9388198.

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 8918839 - 2³ = 8918831 is a prime.

It is a Duffinian number.

8918839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8918831) 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, 66492 + ... + 66625.

It is an arithmetic number, because the mean of its divisors is an integer number (2263006).

Almost surely, 2^8918839 is an apocalyptic number.

8918839 is a deficient number, since it is larger than the sum of its proper divisors (133185).

8918839 is a wasteful number, since it uses less digits than its factorization.

8918839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133184.

The product of its digits is 124416, while the sum is 46.

The square root of 8918839 is about 2986.4425325126. The cubic root of 8918839 is about 207.3812278138.

It can be divided in two parts, 891 and 8839, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 8918839 in words is "eight million, nine hundred eighteen thousand, eight hundred thirty-nine".