83090809 has 8 divisors (see below), whose sum is σ = 84106440. Its totient is φ = 82080000.

The previous prime is 83090801. The next prime is 83090827. The reversal of 83090809 is 90809038.

It can be written as a sum of positive squares in 4 ways, for example, as 25755625 + 57335184 = 5075^2 + 7572^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 83090809 - 2³ = 83090801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83090801) 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, 42759 + ... + 44659.

It is an arithmetic number, because the mean of its divisors is an integer number (10513305).

Almost surely, 2^83090809 is an apocalyptic number.

It is an amenable number.

83090809 is a deficient number, since it is larger than the sum of its proper divisors (1015631).

83090809 is a wasteful number, since it uses less digits than its factorization.

83090809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 83090809 is about 9115.4160080602. The cubic root of 83090809 is about 436.3660916042.

The spelling of 83090809 in words is "eighty-three million, ninety thousand, eight hundred nine".