83056909 has 6 divisors (see below), whose sum is σ = 89937546. Its totient is φ = 76667760.

The previous prime is 83056903. The next prime is 83056913. The reversal of 83056909 is 90965038.

It can be written as a sum of positive squares in 3 ways, for example, as 10381284 + 72675625 = 3222^2 + 8525^2 .

It is not a de Polignac number, because 83056909 - 2³ = 83056901 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83056901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 245562 + ... + 245899.

It is an arithmetic number, because the mean of its divisors is an integer number (14989591).

Almost surely, 2^83056909 is an apocalyptic number.

It is an amenable number.

83056909 is a deficient number, since it is larger than the sum of its proper divisors (6880637).

83056909 is a wasteful number, since it uses less digits than its factorization.

83056909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491487 (or 491474 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 83056909 is about 9113.5563310927. The cubic root of 83056909 is about 436.3067395816.

The spelling of 83056909 in words is "eighty-three million, fifty-six thousand, nine hundred nine".