84803909 has 4 divisors (see below), whose sum is σ = 84851340. Its totient is φ = 84756480.

The previous prime is 84803863. The next prime is 84803911. The reversal of 84803909 is 90930848.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33895684 + 50908225 = 5822^2 + 7135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84803909 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 (84803209) 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, 20924 + ... + 24645.

It is an arithmetic number, because the mean of its divisors is an integer number (21212835).

Almost surely, 2^84803909 is an apocalyptic number.

It is an amenable number.

84803909 is a deficient number, since it is larger than the sum of its proper divisors (47431).

84803909 is a wasteful number, since it uses less digits than its factorization.

84803909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47430.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 84803909 is about 9208.9037892683. The cubic root of 84803909 is about 439.3445975765.

The spelling of 84803909 in words is "eighty-four million, eight hundred three thousand, nine hundred nine".