83385909 has 8 divisors (see below), whose sum is σ = 123534720. Its totient is φ = 55590588.

The previous prime is 83385893. The next prime is 83385919. The reversal of 83385909 is 90958338.

It is not a de Polignac number, because 83385909 - 2⁴ = 83385893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83385919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544157 + ... + 1544210.

It is an arithmetic number, because the mean of its divisors is an integer number (15441840).

Almost surely, 2^83385909 is an apocalyptic number.

It is an amenable number.

83385909 is a deficient number, since it is larger than the sum of its proper divisors (40148811).

83385909 is a wasteful number, since it uses less digits than its factorization.

83385909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088376 (or 3088370 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 83385909 is about 9131.5885255524. The cubic root of 83385909 is about 436.8820712075.

The spelling of 83385909 in words is "eighty-three million, three hundred eighty-five thousand, nine hundred nine".