83775909 has 8 divisors (see below), whose sum is σ = 127658560. Its totient is φ = 47871936.

The previous prime is 83775907. The next prime is 83775917. The reversal of 83775909 is 90957738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83775909 - 2¹ = 83775907 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83775907) 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, 1994644 + ... + 1994685.

It is an arithmetic number, because the mean of its divisors is an integer number (15957320).

Almost surely, 2^83775909 is an apocalyptic number.

It is an amenable number.

83775909 is a deficient number, since it is larger than the sum of its proper divisors (43882651).

83775909 is a wasteful number, since it uses less digits than its factorization.

83775909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989339.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 83775909 is about 9152.9180592858. The cubic root of 83775909 is about 437.5621184178.

The spelling of 83775909 in words is "eighty-three million, seven hundred seventy-five thousand, nine hundred nine".