83290809 has 8 divisors (see below), whose sum is σ = 126919360. Its totient is φ = 47594736.

The previous prime is 83290807. The next prime is 83290819. The reversal of 83290809 is 90809238.

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

It is not a de Polignac number, because 83290809 - 2¹ = 83290807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83290807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983094 + ... + 1983135.

It is an arithmetic number, because the mean of its divisors is an integer number (15864920).

Almost surely, 2^83290809 is an apocalyptic number.

It is an amenable number.

83290809 is a deficient number, since it is larger than the sum of its proper divisors (43628551).

83290809 is a wasteful number, since it uses less digits than its factorization.

83290809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966239.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 83290809 is about 9126.3798408789. The cubic root of 83290809 is about 436.7159228731.

The spelling of 83290809 in words is "eighty-three million, two hundred ninety thousand, eight hundred nine".